Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 5642404 | Clasp structure for cellular phone and battery set A clasp structure of a cellular phone and its battery set includes a cellular phone and a battery set. The battery set includes a case and a battery base. On the battery case there is a clasp component which uses the elasticity of a spring component to jo... | 06/24/1997 |
| 5628055 | Modular radio communications system A modular telecommunications system configured for wireless telecommunication in accordance with a pre-selected standard. Modular units are adapted to be secured within other items of electronic equipment for establishing a telecommunications link with a ... | 05/06/1997 |
| 5613223 | Mobile communicator bracing system A bracing system protects and secures the internal components of a mobile communication system. The bracing system includes an upper housing comprised of a shock resistant material. The upper housing includes a monitor cavity, elevated portions surroundin... | 03/18/1997 |
| 5603103 | Radio telephone with compliant shield and method An assembly and method of assembly for shielding a radio telephone. First and second shields are disposed either side of a circuit board and urged together thereby sandwiching the circuit board. The first shield is relatively rigid compared to the second ... | 02/11/1997 |
| 5603100 | Portable telephone with speaker projected in front upper oblique direction A portable telephone includes a telephone body, a receiver unit, a receiver supporting mechanism and a display unit. The telephone body includes a transmitter attached to one end thereof and an antenna attached to the other end thereof. The telephone body... | 02/11/1997 |
| 5586168 | Apparatus incorporating a cellular telephone Cellular telephone apparatus having at least two pieces that are separated or separable such that the cellular antenna may be situated at a distance from the user during use. The cellular telephone apparatus has a cellular antenna which communicates with ... | 12/17/1996 |
| 5577267 | Assembly for visually indicating signals generated by an electrical circuit and light-diffusing interface apparatus therefor An assembly for visually indicating signals generated by an electrical circuit and a light diffuser therefor. Light emitting diodes disposed upon a circuit board and housed within a housing structure are connected to an electrical circuit and generate lig... | 11/19/1996 |
| 5568537 | Transportable mobile cellular system A modified mobile cellular booster system is used to boost the power of a hand held portable cellular phone, from a maximum of six-tenths of a watt (0.6 watts), to the maximum power level of a mobile cellular phone, three (3) watts. The main components of... | 10/22/1996 |
| 5564085 | Cellular telephone RF radiation ameliorating device A device for ameliorating RF radiation received from cellular telephones and the like is disclosed. The device includes at least one spacing member attachable to the cellular telephone so as to maintain the telephone a minimum desired distance from the us... | 10/08/1996 |
| 5548824 | Portable radio communication device housing having a battery storage unit A slim portable radio communication device housing that can be connected to an external input/output connector without removing a battery pack. A fitting mount of a battery pack is rotatably fitted to the radio communication device housing via shafts. The... | 08/20/1996 |
| 5542105 | Position sense radio carry case apparatus and method of using same A device used with a portable radio (10) and associated carrying case (30) which can automatically adjust radio control functions such as audio output, DTMF tone level mode telephone hang-up or illumination levels of the radio depending on the radio's pos... | 07/30/1996 |
| 5535434 | Carry case having paging circuitry section A carry case (102) for transporting an electronic device, such as a radio (100) or controller module (300), and providing paging capability when combined with the electronic device. The carry case includes a housing and contained within the housing is a f... | 07/09/1996 |
| 5535437 | Portable radio battery latch A latch (16) for latching or locking a battery housing (14) to a portable radio housing (12) automatically locks into place when it is placed in the radio, and automatically ejects the battery housing when it is unlocked. The latch is movable from a first... | 07/09/1996 |
| 5517683 | Conformant compact portable cellular phone case system and connector A compact portable cellular telephone extension that provides additional electronic functions is implemented in a case attachable to a first external surface of the cellular phone to form a physically integral unit. A connector is supported by the case an... | 05/14/1996 |
| 5471653 | Portable radio apparatus and mount structure therefor A portable radio apparatus includes a housing, a receiver unit, a transmitter unit, and a hinge member. The housing has a longitudinally elongated, thin, rectangular parallelepiped shape. The receiver unit is arranged on one surface side of an upper porti... | 11/28/1995 |
| 5348347 | Portable phone organizer A pocketbook size organizer that can store a portable cellular phone. The organizer comprises a flexible book which has a first cover portion that can fold onto a center cover portion and a second cover portion that folds onto the first cover portion. The... | 09/20/1994 |
| 5349694 | Radio relay system with a multiplex separation circuit and control for providing time delay multiplex operation of receiver and transmitter A radio relay system which comprising an external conductor, a first antenna installed on the externals conductor for transmitting and receiving a first radio carrier wave, a second antenna installed on the external conductor for transmitting and receivin... | 09/20/1994 |
| 5335261 | Radio telephone apparatus A radio telephone comprising a main body enclosing a transmitting circuit and a receiving circuit; a handset removably mounted to the main body, the handset including a microphone electrically connected to the transmitting circuit and a speaker electrical... | 08/02/1994 |
| 5307401 | Cellular telephone with microphone extender A cellular telephone having wrap-around control keys which extend beyond the front surface of the telephone to its sides, an extended add-on microphone adapter which extends the microphone so it is positioned closer to the user's mouth and a non-slip or s... | 04/26/1994 |
| 5278893 | Telephone having two handsets The telephone (1) comprises a base (2) adapted to be connected to a telephone line, a first handset (4) connected to the base (2) by a flexible cord (5) and a second handset (6) connected to the base (2) by a radio link. To reduce the size of the base (2)... | 01/11/1994 |
| 5276916 | Communication device having a speaker and microphone A radio or speaker-microphone unit includes a housing having first and second portions. A speaker is disposed in one of the portions and a microphone in the other of the portions. The portions are movable between first and second relative positions, with ... | 01/04/1994 |
| 5271056 | Electromagnetic interference shielding construction in a radio telephone A frame construction for a radio telephone or the operating device of a radio telephone. The radio telephone comprises a frame on which printed circuit boards containing telephone electronics are secured on both sides of a substantially flat, electrically... | 12/14/1993 |
| 5267297 | Base station for a radio communication system A base station for a mobile communications system including an antenna for transmitting a radio carrier wave to a mobile communications device and receiving signals therefrom, a coaxial external conductor including a skirt in the form of a sun shade havin... | 11/30/1993 |
| 5241592 | Telephonic handset housing assembly for cordless telephone A telephonic handset housing assembly for a cordless telephone. The housing assembly comprises a carriage and a clip which is releasably engageable with the carriage. Because the clip is releasably engageable with the carriage, when the handset is not to ... | 08/31/1993 |
| 5230016 | Holder for portable electronic equipment A holder for an electronic appliance includes a holding section 2 for holding a portable electronic appliance 101. A control circuit section 21 senses the temperature within the holding section 2 and, when the temperature is found to be higher than a pred... | 07/20/1993 |
| 5201069 | Electroacoustic transducer mounting apparatus In an exemplary embodiment, a communication device, such as a radiotelephone (100), has within its housing (106) an apparatus for electrically coupling an electroacoustic transducer (201), such as an earpiece, to radiotelephone circuitry (403). The appara... | 04/06/1993 |
| 5200997 | Internal auxiliary frame for hand telephone An auxiliary frame to be detachably fastened inside a hand-held telephone for mounting at least some of the components of the hand telephone, has a lower edge with separate indentations for receiving power supply contacts and for securing them between the... | 04/06/1993 |
| 5157722 | Holder and latching mechanism for a hand-held telephone A telephone holder and latching mechanism for use in conjunction with a hand-held, credit-card telephone in, for example, a commercial aircraft is disclosed. An integrally formed face plate, an integrally formed handset holder, and an integrally formed la... | 10/20/1992 |
| 5155860 | Cellular portable telephone battery pack and programmer interface An apparatus that includes various connectors, a battery compartment, and a circuit card is disclosed. The apparatus serves as a battery pack and programmer interface unit (BP/PIU) which mates with a cellular portable telephone (CPT) transceiver to form a... | 10/13/1992 |
| 5151643 | Integral hang-up and battery charging apparatus A charging apparatus for a multiunit system includes a portable unit (101) and a base unit (103). The portable unit (101) includes first and second conductive contacts (119, 120) disposed on the portable unit (101) essentially opposite each other, and rec... | 09/29/1992 |
| 5109539 | Portable communication device A portable radio device in which a radio telephone device body and a receiver unit are separately constructed and connected together by a pair of adjustable supporting rods. As a result, the distance between the radio telephone device body and the receive... | 04/28/1992 |
| 5023902 | Radio channel unit message and control signal processing architecture A new architecture for a cellular radio telephone system groups all of the critical cellular functions within a single circuit package in order to provide enhanced versatility to accommodate changes in requirements, including processing means and channel ... | 06/11/1991 |
| 5001772 | Power pack with concealed radio transmitter for portable cellular telephone The present power pack for a portable cellular telephone has a concealed radio transmitter for law enforcement use. The usual battery compartment in the housing of the power pack has a shortened battery compartment above which are located interior walls o... | 03/19/1991 |
| 4912602 | Mechanical fastening system for an electronic equipment housing A housing for miniature electronic equipment is disclosed. A mechanical fastening system is utilized in holding front and rear portions of the housing together without conventional fasteners. The front housing portion has cantiliever beam spring catches w... | 03/27/1990 |
| 4892486 | Portable communications device adaptor A vehicular adaptor for a portable communications device, such as a cellular telephone, pager, or two-way radio, is disclosed which includes a connector that aligns itself to a mating connector on the communication device. The connector permits spatial al... | 01/09/1990 |
| 4881258 | Portable type mobile radio telephone A portable type mobile radio telephone wherein a battery holding device and a handset cradle is formed on one wider surface of the flat-shaped transceiver unit to be in parallel to each other. The transceiver unit has a guide hole and a first connector at... | 11/14/1989 |
| 4876724 | Personal sound system A personal sound system comprising a garment adapted to substantially cover a person's upper torso, a first pocket for removably supporting a first speaker on the garment in the vicinity of a person's left shoulder, a second pocket for removably supportin... | 10/24/1989 |
| 4868888 | Audio communications module for an office chair An audio communications system for an office chair provides a user with private listening of RF transmitted audio messages in an exposed environment such as an office area, without the use of headphones. An audio module, which mounts to the backrest of an... | 09/19/1989 |
| 4829224 | Battery pack for cellular telephone In one embodiment, the rechargeable, auxiliary battery pack includes a housing made of insulative material that defines an enclosed space and has a top surface cavity which companionately seats a bottom region of a cellular telephone. A bracket holds a st... | 05/09/1989 |
| 4776553 | Telephone cradle mount A telephone cradle mount comprises a mounting member for mounting a telephone cradle and a fixing member, each of the mounting and fixing members comprises a generally rectangular mounting plate section, a first and second stationary bearing sections each... | 10/11/1988 |
