1
Per Ingvar Branemark, Bo Thuresson Af Ekenstam: Bone prosthesis and method of forming a bone joint. January 3, 1978: US04065817 (127 worldwide citation)

A bone prosthesis and the method of securing it in place, in which the prosthesis is formed as a tubular support member having perforations therein, the end of the bone is bored, the tubular support member is introduced into the bore and cement is then introduced into the interior of the tubular sup ...


2
John William Fenton, Jerry Stevenson Lee, Richard James Buist: Counter-flow thermoelectric heat pump with discrete sections. Borg Warner Corporation, James J Jennings, January 3, 1978: US04065936 (118 worldwide citation)

Thermoelectric heat pumps using parallel flow, crossflow, or counter-flow of the input and output fluid streams have been designed and built, but performance has been insensitive to flow arrangement due to the use of one-piece, essentially isothermal heat exchangers on the heated and cooled thermoel ...


3
Philip Nicholas Sawyer: Surgical method of using a sterile packaged prosthesis. Alan K Roberts, January 3, 1978: US04065816 (115 worldwide citation)

A method is provided for packaging a prosthetic device for surgical use. The method includes detachably coupling a support to the device, cleaning substantially all of the foreign material from the device, and encapsulating the thusly cleaned device in an openable capsule with the support extending ...


4
Jacques L Roch: High speed precision chuck assembly. Electroglas, Ellsworth R Roston, January 3, 1978: US04066943 (113 worldwide citation)

Testing of integrated circuit components of the silicon wafer type for grading purposes is accomplished by supporting the wafer matrix on a platform type work table which is indexed in an x-y coordinate fashion, with the work table being moved vertically to a test position such that the test probes ...


5
Robert Charles Huntington: Sample and hold circuit. Motorola, Joe E Barbee, January 3, 1978: US04066919 (110 worldwide citation)

An electronic circuit suitable to be fabricated in monolithic integrated circuit form for producing at an output terminal an output signal for a predetermined time period of which the value thereof corresponds to the value of a periodically sampled, time varying, input signal applied at an input ter ...


6
Nicholas Derchak: Shared direct memory access controller. Sperry Rand Corporation, B Franklin Griffin Jr, E T Battjer, Sheldon Kapustin, January 3, 1978: US04067059 (107 worldwide citation)

A microprocessor system includes a microprocessor, a memory, and one or more direct memory access controllers, all connected to a common system bus which includes a system address bus and a system data bus. At least one of the direct memory access controllers is shared by a plurality of subsystem de ...


7
Randal E Bahner, Jay B Haws: Locking stand for small, portable devices. Knobbe Martens Olson Hubbard & Bear, January 3, 1978: US04066231 (102 worldwide citation)

A stand for a small, portable device which requires visual observation includes a base section, adapted to sitting on a support surface, connected through an adjustable friction swivel joint to a support member on which the portable device rests. A lock is provided for locking the portable device to ...


8
Roger L Scriven, Wen Hsuan Chang: Water-reduced urethane coating compositions. PPG, William J Uhl, January 3, 1978: US04066591 (101 worldwide citation)

A water-diluted, ungelled, non-sedimenting polyurethane and a process for preparing such a polyurethane in an aqueous medium is disclosed. High molecular weight thermoplastic products are obtained by chain extending in aqueous medium an NCO polymer having a salt group equivalent weight of 6000 or le ...


9
Robert Eric Young: Data transmitting systems. Serck, Sughrue Rothwell Mion Zinn and Macpeak, January 3, 1978: US04066841 (100 worldwide citation)

It is important that a data transmission system should be fast, utilize a minimum of band width and be accurate in the presence of high noise levels. The invention provides a frequency shift keying data transmission system for transmission of binary coded information in which the mark of the coded p ...


10
James N White, Richard E Seeger: Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold. Chomerics, Sewall P Bronstein, Donald Brown, January 3, 1978: US04066851 (95 worldwide citation)

Keyboard construction using a sheet of flexible and resilient non-conductive material preferably non-conductive plastic which is preformed in a predetermined manner for supporting both contact means and contactor means and which is adapted to be folded so that the contact and contactor means are pos ...



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