"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 4527267 | Method of administering local and end-to-end acknowledgments in a packet communication system A D-bit in an X.25 data packet access protocol flags whether an acknowledgment of packet communication can be local or must be end-to-end. The disclosed method with programmed processing handles the D-bit option by a two-sided memory table that couples th... | 07/02/1985 |
| 4524440 | Fast circuit switching system A fast circuit switching system that establishes a circuit for each packet-sized data communication. Information is conveyed from a number of communications modules in source channels to a number of port controllers and to a network. Information is convey... | 06/18/1985 |
| 4340044 | Volume ventilator A medical ventilator is disclosed for switching and mixing oxygen with air in a driving and oxygen mixing means (2) and delivering the mixture to a gas flow control apparatus (3) for application directly to a patient breathing apparatus (5) or to storage ... | 07/20/1982 |
| 4279032 | Channel bank loop-around test arrangement and method A method of detecting analog signal degradations in channel bank apparatus. The apparatus interconnects a digital PCM line with a plurality of analog trunks by means of multiplex circuitry and a plurality of channel units each comprising a PCM-to-analog s... | 07/14/1981 |
| 4270554 | Hair fastener clip for hair roller A hair fastener clip for a hollow cylindrical hair roller is disclosed. The roller has a hollow interior defined by an inner cylindrical wall and an exterior wall defining a peripheral surface onto which hair is rolled. The fastener comprises a pair of sp... | 06/02/1981 |
| 4256100 | Flow control equipment An anesthesia ventilator is disclosed for controlling the flow of air and/or oxygen through a plurality of binary weighted valves from a fluid regulator source to a bellows assembly. Directly-set minute volume, breath rate and inspiration to expiration ra... | 03/17/1981 |
| 4205624 | Method and equipment for sanitizing animal soiled rubber bedding material This specification discloses a procedure and facilities for removing animal excretions from rubber particles used as stall bedding material for animals, such as horses. The procedure involves vacuuming the bedding material into a drum container and then w... | 06/03/1980 |
| 4186278 | End-of-keying control circuit A TOUCH-TONE signal to dial pulse converter arrangement isdisclosed in a step-by-step system. The arrangement is equipped with a plurality of trunk circuits interposed between line finder and selector switches for extending calls from TT (TOUCH-TONE) tele... | 01/29/1980 |
| 4166929 | Interoffice callback arrangement A telephone switching system is disclosed with facilities for processing interoffice callback information over a common channel interoffice signaling system (4) between program controlled call processors (21, 34) in call originating and terminating office... | 09/04/1979 |
| 4162377 | Data base auto bill calling using CCIS direct signaling A method is disclosed for automatically processing call data from a TSPS (Traffic Service Position System) over CCIS (Common Channel Interoffice Signaling) facilities to a remotely located data base system to verify the entitlement of the caller to bill t... | 07/24/1979 |
| 4161878 | Pressure fluctuation flowmeter A fluid flowmeter includes a bluff body for producing vortex shedding free of intermittency. The body has at one end a support member for mounting in a conduit and has proximate its downstream surfaces a pair of orifices. A vibratory planar sensor, prefer... | 07/24/1979 |
| 4149694 | U-shaped antenna mounting assembly for automobiles A CB antenna (10) or the like is mounted on the edge of an automobile trunk lid (12) by means of a stepped bracket (18), which carries the antenna, and a U-shaped support member (20) which is mountable on the trunk lid edge. The support member has a pair ... | 04/17/1979 |
| 4150381 | Mounting assembly for automobile antenna An assembly for mounting an object such as a CB antenna and the like on rigid bodies, such as motor vehicles, trunk lids, and door frames, for example, comprises a support member mounted on the underside of the body and having a channel extending therethr... | 04/17/1979 |
| 4124775 | Coin box removal information processing arrangement Automatic coin telephone station and central office systems have advanced recently to the point where facilities have been designed for accumulating at a centralized location data on the exact numbers and types of coins deposited in coin phones. This disc... | 11/07/1978 |
| 4124774 | Telephone station coin memory and control system Automatic coin telephone station and central office facilities are disclosed for deriving data on the exact numbers and types of coins deposited during initial and overtime periods. Each station is equipped with nickel, dime and quarter binary counter mem... | 11/07/1978 |
| 4114160 | Automobile antenna mounting bracket apparatus A plurality of stepped bracket configurations for mounting a CB (Citizen Band) antenna to an inner door frame of a motor vehicle, such as a car, van, truck and trailer cab are disclosed. Each illustrative bracket comprises a plurality of treads and at lea... | 09/12/1978 |
| 4114158 | Mount assembly for antennas with male-female securing means A mount assembly for objects such as CB antennas is described in which: a stepped bracket has an upper tread for carrying the object, a lower tread having a recess therein and a riser connecting the treads together; a support member including a pair of gu... | 09/12/1978 |
| 4113996 | Voltage controlled current sources for active hybrid circuit An active hybrid circuit equipped with a resistor bridge, balance network and transmit and receive amplifiers for 2-wire to 4-wire long haul trunk communication between a telephone central office and a distantly located operator console is disclosed. High... | 09/12/1978 |
| 4113986 | Telephone controlled lock release arrangement Circuitry is disclosed for the automatic dial-up of an apartment telephone from a lobby telephone to provide voice communication therebetween via a central switching office and for controlling the establishment of a switched signaling path through a switc... | 09/12/1978 |
| 4114159 | Dual pivot mount assembly for an automobile antenna Described is a mount assembly comprising a support member pivotally mounted, about a first axis, to a rigid body (e.g., the underside of a motor vehicle trunk lid) and a bracket pivotally mounted, about a second axis, to the support member so as to protru... | 09/12/1978 |
| 4088333 | Jaws, guiding base plates and adjusting mechanism for chucks A drill chuck is disclosed with a pair of jaws and a pair of jaw guiding base plates for centering and holding a drill bit. The chuck comprises a cylindrical housing for the pair of base plates in which the jaws are functionally located. Internal channels... | 05/09/1978 |
| 4079210 | Ringing and testing control circuitry for communication systems An electronic program controlled switching system is disclosed having a ringing control circuit for testing called lines for foreign potential and excessive leakage before ringing the called phone. The circuit includes bridge rectifiers and transistor cir... | 03/14/1978 |
| 4069708 | Flowmeter plate and sensing apparatus A bluff body flowmeter for a pipeline is disclosed with a plate mounted within the pipe and downstream of a vortex generating body for maintaining fluid vortex streets separated to facilitate their detection and translation into indications of flowrate th... | 01/24/1978 |
| 4065643 | Communication facility integrity checking arrangement Circuitry for integrity verification is provided to prevent a calling party from unknowingly remaining connected to a faulty trunk connection between an automatic switching office and an operator-assisted office. New circuit arrangements are added to the ... | 12/27/1977 |
| 4047432 | Bluff body flowmeter including shield-channel arrangement A bluff body flowmeter, including a bluff body having a planar base surface portion disposed normal to fluid flow and a pair of converging downstream surfaces, is provided with a fluid flow channel in the base surface portion, a sensor in the channel and ... | 09/13/1977 |
| 4048451 | Arrangement for monitoring live call disposition signals The reliable detection of call disposition signals to identify the ultimate dispositions of calls switched over a cross-office connection is achieved by attaching monitoring equipment to the sender that has been seized by an incoming trunk circuit of a te... | 09/13/1977 |
| 4043468 | Retractable ramp for lifting objects into a vehicle A retractable ramp is described for loading heavy objects into a vehicle, for example, for lifting a stretcher and patient up onto the floor of a modular ambulance, or rescue vehicle body. The ramp, which is stored on guides below the floor when not in us... | 08/23/1977 |
| 4041403 | Divide-by-N/2 frequency division arrangement An arrangement for frequency division of a symmetrical pulse train by N/2 where N is an odd integer greater than 1; this arrangement does not require the use of any one-shot multivibrators or delay elements and employs only log2 (N+1) flip-flop... | 08/09/1977 |
| 4028663 | Digital computer arrangement for high speed memory access A data processing arrangement is disclosed including a central processing unit, a plurality of peripheral units coupled to a peripheral bus, a memory access controller, a first memory bus, and a second memory bus. The first memory bus serves a first plura... | 06/07/1977 |
| 4022935 | Method of spraying sealing composition to interior walls of storage tank This specification describes a process and apparatus for closing leaks and spraying a sealant composition to interior walls of an underground gasoline tank such as is used in retail gasoline service stations. A gas tank suspected of leaks is emptied of st... | 05/10/1977 |
| 4022979 | Automatic in-service digital trunk checking circuit and method The integrity of switched, time-division multiplexed digital trunks in a telephone switching system is verified on an individual and in-service basis wherein the digital check is accomplished incident to the conventional D.C. network path continuity verif... | 05/10/1977 |
| 4021070 | Mechanical lift Described is a mechanical lift for lifting (or lowering) an object to (or from) an elevated storage compartment. The lift comprises a carriage in which the object, for example an oxygen tank, is secured. Rigid bars are pivotally mounted to an upper portio... | 05/03/1977 |
| 4017696 | Initializing circuit Initializing apparatus for use with circuitry mounted on a plug-in printed circuit board is described. Illustratively a telephone make-busy circuit is disclosed, which circuit automatically operates a make-busy relay on a plug-in telephone circuit when th... | 04/12/1977 |
| 4002033 | Rotary displacer for rotary engines or compressors A rotary displacer mechanism of the rotary-abutment type utilizes improved piston and sealing rotor design to reduce internal leakage and increase volumetric efficiency. A rotary-abutment positive displacement mechanism typically comprises a housing which... | 01/11/1977 |
| 3982434 | Fluid flow signal processing circuit A fluid mechanical arrangement of a bluff body flowmeter in a pipe line is disclosed with a thermal sensor arrangement for sensing flow signals in that pipe and with a method and circuit for processing the sensed signals to subtract low frequency fluid no... | 09/28/1976 |