Chen Tien Chi, Ho Irving T: Fast modulo threshold operator binary adder for multi-number additions. March 27, 1973: US3723715 (145 worldwide citation)

A fast adder for adding more than three words, the correspondingly weighted bits of which are applied to respective bit column adders. The column adders simultaneously produce respective sum and carry result bits of overlapping positional significance or weight. The maximum number of result bits hav ...

Tatsuzawa Yoshinobu: Television telephone system. March 27, 1973: US3723653 (113 worldwide citation)

A television telephone system, wherein frequency-modulation with a low modulation index is effected by using a carrier wave of a slightly higher frequency than the maximum frequency of a video signal, and the video signal thus modulated is transmitted through a transmission line. With such system, a ...

Alvarez Joseph A, Barner Jr Robert P: Memory system with logical and real addressing. International Business Machines Corporation, March 27, 1973: US3723976 (110 worldwide citation)

A memory system is disclosed for use in a multiprocessing environment where each processor has associated with it a buffer memory and means are provided for one buffer to retain a modified copy of data. The contents of the buffer memory may be accessed by either real or logical addresses. Address tr ...

Fujio Takashi, Komoto Taro: Color television system including additional information signals in pulse code on a special color burst. Nippon Hoso Kyokai, March 27, 1973: US3723637 (108 worldwide citation)

A multiple transmission system of one or more information signals on a color television signal, wherein at least one information signal, such as a voice signal, is sampled and coded to form a coded digital signal representing the information signal. The coded digital signal consists of pulses having ...

Butler Anthony J: Propellants and refrigerants based on trifluoropropene. March 27, 1973: US3723318 (97 worldwide citation)

Aerosol propellants and refrigerants based on trifluoropropene (CF.sub.3 CH=CH.sub.2) are disclosed.

Koester Waldemar: Method of constructing an expansion gap device and lost casing for such expansion gap. Friedrich Mauer Soehne, March 27, 1973: US3722379 (87 worldwide citation)

The present invention relates to a method of constructing an expansion gap between two structural members such as concrete slabs in roads or on bridges. First the concrete slabs are formed with a gap between two adjacent slabs whereupon a surface layer is applied to the slabs to cover the slabs as w ...

Vockenhuber Karl, Keznickl Eduard: Rangefinder. Hauser Raimund, March 27, 1973: US3723003 (76 worldwide citation)

A rangefinding assembly, which comprises a transmitter having emitting means for emitting short waves. A receiver is mounted in fixed relation with respect to the transmitter, which receiver is adapted to receive short waves emitted by the transmitter and reflected by an object. An image forming sys ...

Hills Jeffrey Mark: Toothbrush with concavity formed by bristle ends. March 27, 1973: US3722020 (75 worldwide citation)

A toothbrush comprising a generally planar head portion having a plurality of bristles forming a concave surface. Some of the bristles are generally perpendicular to said head portion and some are laterally inclined outwardly. This bristle configuration removes food debris, plaque and bacteria ledge ...

Vermeer Gary J: Method and machine for forming a large round bale of a fibrous material. March 27, 1973: US3722197 (73 worldwide citation)

The method and machine is for forming large round bales about 7 feet in diameter, 6 feet long and weighing about a ton and a half. The machine has a portable frame provided with pickup device for gathering and delivering windrowed material on to a horizontal rearwardly moving belt conveyor. Cooperat ...

Rauh Jack: Adjustable shower head assembly with diverter valve. Modern Faucet Manufacturing Company, March 27, 1973: US3722799 (72 worldwide citation)

A shower head assembly having an upper and lower portion, wherein the upper portion has a diverter valve mechanism slidably mounted therein, and the lower portion of the assembly is in threaded contact with the upper portion and moveable with respect thereto, thereby altering the exit apertures of t ...