Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 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 |
| 5177784 | Head-set telephone device and method Several embodiment of a telephone device having a cradle and a headset assembly are disclosed. Each headset has spring biased members to firmly hold the headset on a person's head which device frees the hands when listening thereto or talking therein. In ... | 01/05/1993 |
| 5003589 | Headphone-convertible telephone handset A headphone-convertible telephone handset including primarily a handle and a receiver portion, the receiver portion having a first receiver disposed therein, said handle having a second receiver, a transmitter and two arch connecting strips, the two arch ... | 03/26/1991 |
| 4942605 | Security handset A security device for use with a telephone handset having a microphone and an ear transducer is disclosed. It is adapted to prevent eavesdropping while the handset is in an on-hook position. The security device is comprised of switching assembly disposed ... | 07/17/1990 |
| 4926474 | Ergonomic telephone handset An ergonomic telephone handset having a handle terminating at one end in a speaker portion and at its opposite end in a microphone portion, the handle being bent between its ends in J, V, or zig-zag form. The speaker portion is inclined to the handle at a... | 05/15/1990 |
| 4907266 | Headphone-convertible telephone hand set The disclosure relates to a headphone-convertible telephone hand set which can be converted into a headphone-like telephone and produce double-form or stereo-like sound in its receiver, thus permitting the present telephone to be worn on a user's head to ... | 03/06/1990 |
| 4868876 | Electrostatic discharge protection device An electrically conductive network which, at one end, has a low-resistance connection with a user's hand and, at the other end, has a high-resistance connection with ground. This protects electrical equipment such as a telephone keyset from electrostatic ... | 09/19/1989 |
| 4844573 | Electro-optical converter including ridgid support for optical fiber coupler, telephone set using the coupler and method of making same An electro-optical converter has at least three optical or electrical ports at least one of which is optical and one of which is electrical. The converter includes an essentially rigid support, a fiber-optic lateral coupler secured to the support includin... | 07/04/1989 |
| 4837819 | Security handset A security device for use with a telephone handset having a microphone and an ear transducer is disclosed. It is adapted to prevent eavesdropping while the handset is in an on-hook position. The security device is comprised of switching means disposed in ... | 06/06/1989 |
| 4821320 | Device for protecting electrical apparatus and the operator when the operator carries a high electrostatic charge A device for protecting both the operator of an electronic apparatus and the electronic equipment of the apparatus when the operator carries a high electrostatic charge. To ensure a gentle electrostatic discharge of the operator, resistance paths which le... | 04/11/1989 |
| 4821318 | Convertible handset device for telephone sets A convertible handset device for telephone sets includes: a handset body with a handle portion in the middle having a cord groove formed therein, a first internal trough with a trough mouth at one end and a second internal trough with an end opening at th... | 04/11/1989 |
| 4817138 | Telephone having a handset and a rase each having a receiver and microphone The telephone comprises a handset (8) having a receiver and a microphone, and a base (2) on which the handset may be placed. According to the invention, the casing (28) of the base is fitted with another receiver and another microphone and has a shape suc... | 03/28/1989 |
| 4817139 | Adjustable telephone handset cradle A tiltable and to-fro adjustable telephone handset cradle. A curvilinear wire-or band-frame cradle has a base that engages a track which is fixable to a handset. Pivotability means in the cradle, as well as a slideable, adjustable attachment to the handse... | 03/28/1989 |
| 4803724 | Hand set This invention is concerned with arrangement for fitting a sender onto a hand set. The hand set of the invention enables a float set type sender to be set onto a hand set case by using a holder which is designed to set a pressure contact set type sender a... | 02/07/1989 |
| 4791526 | Mount of a printed circuit board arranged in a bipartite housing The invention is directed to a mount of a resiliently elastic, planar printed circuit board in a housing having a curved shape and composed of two parts. The end regions of the printed circuit board are secured such that a temporary positional change of t... | 12/13/1988 |
| 4782527 | Telephone head/hand set A simple combination handset and headset device includes an elongated, preferably flexible body with a mouthpiece at one end thereof and an earpiece at the other end thereof, and a tubular arm pivotally connected to the mouthpiece for rotation between han... | 11/01/1988 |
| 4700383 | Lock-releasing mechanism for telephone set with muting function A lock-releasing apparatus for use in a telepone set, having a lock-releasing button (61) for a locking mechanism which locks a handset (41) stationarily to a cradle (42). The lock releasing button also actuates a muting switch (71).... | 10/13/1987 |
| 4646344 | Mobile radio set The mobile radio set has a rectangular parallelepiped-shaped case suitable for mounting in the dashboard of an automobile. The handset can be locked at its earpiece and mouthpiece into a cradle mounted on the front panel of the case so that the handset ca... | 02/24/1987 |
| 4618917 | Integral phone light accessory A phone light accessory comprising a light producing element and a conductor element which is integrated into the hand set apparatus of many standard telephone designs.... | 10/21/1986 |
| 4456794 | Fastening arrangement for a handset case halves A fastening arrangement to keep together the parts of a handset consisting of two case halves. The microphone and/or the telephone receiver is kept in position in the case by a clamping element upon pressing the two case halves towards each other. The cla... | 06/26/1984 |
| 4430528 | Telephone call counter An apparatus and method are disclosed for counting the number of calls made by a user during a counting period. The apparatus includes a telephone having a curved handset which is displaceable approximately 90° from a rest position to a use position. Att... | 02/07/1984 |
| 4341926 | Apparatus for the direct connection of ancillary equipment to the telephone network Apparatus and method for the direct connection of a facsimile transceiver or other ancillary apparatus to the telephone network is disclosed. The connection is made by removing the microphone from a telephone hand set and substituting therefor a microphon... | 07/27/1982 |
| 4232196 | Video telephone apparatus A video telephone apparatus useful at indoor positions includes a casing having a frontal wall and a longitudinal axis and a picture tube having an axis. The picture tube is positioned within the casing with its axis substantially parallel to the longitud... | 11/04/1980 |
| 4220829 | Telephone handset The handset consists of two parts, i.e. of a smooth upper part and of a lower part including the two cap members accommodating the acoustic transducers (receiver and microphone capsules). The top part is connected to the lower part by means of bayonet joi... | 09/02/1980 |
| 4178490 | Tamperproof handset for railroad applications A tamperproof handset for use in a railroad communication system. The handset has a cable provided with plural wires which electrically connect the handset with a communication control. The control is provided with a housing having a front panel. The cabl... | 12/11/1979 |
| 4117276 | Handset locking and release mechanism A telephone apparatus includes a handset with a heel and a head with a recess, a base having a first depressed part with a lip to receive and hold the heel of the handset and a second depressed part adapted to receive the head of the handset when the hand... | 09/26/1978 |
| 4087659 | Tamperproof handset for railroad applications A tamperproof handset for use in railroad communication systems has a cable which interconnects it with a communications control panel. The transmitter end of the handset and a cap therefor have mating threads. A screw passes through a hole in the transmi... | 05/02/1978 |
| 4018998 | Communication hand-set foldable for protection A handset for connection to a communication system to serve as peripheral equipment apparatus is constructed as a two-part unit, in which the casing parts are hinged together and when folded down audio and manual access parts and elements are covered, but... | 04/19/1977 |
