1
Lenzkes Herbert H: Electronic system for the stimulation of biological systems. General Dynamics Corporation, April 17, 1973: US3727616 (262 worldwide citation)

A receiver totally implanted within a living body is inductively coupled by two associated receiving coils to a physically unattached external transmitter which transmits two signals of different frequencies to the receiver via two associated transmitting coils. One of the signals from the transmitt ...


2
Fullerton Robert L: Automotive transmission. Fullerton Transiission Company, April 17, 1973: US3727474 (148 worldwide citation)

An automotive transmission has a drive tube rotatably mounted on a frame and carrying a drive disc having a first half-toroidal friction surface and a free-running neutral disc having a friction surface continuing the first friction surface. A driven tube is also rotatably mounted on the frame and c ...


3
Hawes Roland C: Polarization interferometer. Cary Instruments, April 17, 1973: US3728030 (148 worldwide citation)

Fourier spectroscopy is used in the measurement of circular dichroism, the method involving the use of an interference polarization modulator which is characterized by production of negligible amplitude modulation in the absence of dichroism in the optical train that follows the modulator and in the ...


4
Baer Ralph H: Television gaming and training apparatus. Sanders Associates, April 17, 1973: US3728480 (139 worldwide citation)

The present invention pertains to an apparatus and method, in conjunction with standard monochrome and color television receivers, for the generation, display, manipulation, and use of symbols or geometric figures upon the screen of the television receivers for the purpose of training simulation, fo ...


5
Carmichael Keith Stewart: Noneverting bottom for thermoplastic bottles. E I du Pont de Nemours and Company, April 17, 1973: US3727783 (131 worldwide citation)

A generally cylindrical thermoplastic bottle for bottling liquids under pressure such as beer, soda and aerosols, having a noneverting bottom under conditions of bottling and use wherein the bottom comprises at least three lobes around the bottom perimeter of the bottom on which the bottle stands, s ...


6
Bayer Edward Bernard: Variable speed drive mechanisms. April 17, 1973: US3727473 (126 worldwide citation)

A variable speed drive mechanism is disclosed wherein a rotatable drive member imparts movement to a driven member through a cage containing a series of rotary elements sandwiched between the two members, at least one of which is resiliently flexible. The elements engage a circular track comprising ...


7
Frohman Bentchkowsky Dov: Random-access floating gate mos memory array. Intel Corporation, April 17, 1973: US3728695 (90 worldwide citation)

A random-access memory array which utilizes a metal-oxide-semiconductor MOS device as a storage element is disclosed. The device includes a floating gate which may be selectively charged and discharged in order to program the device with a '0' or a '1.' The memory array which utilizes a plurality of ...


8
Kraus Constantine Raymond: Voicegram service. April 17, 1973: US3728486 (87 worldwide citation)

A voicegram service center for use with a telephone system, including recording as an analog signal at the service center, a voicegram of spoken words or data (datagram) received from a sending telephone subscriber's set, delivering to a preselected receiving telephone subscriber's set a reproductio ...


9
Orr Robert F: Rinsing and drying device. Fluoroware of California, April 17, 1973: US3727620 (82 worldwide citation)

An automatic rinsing and drying device for batch processing of thin wafers such as those used as microelectronic substrates and the like. The wafers are supported in a carrier basket on a rotating member during a programmed cycle of a sprayed rinsing with deionized water and a high speed spin drying ...


10
Sielaff Ulrich: Apnea detection device. April 17, 1973: US3727606 (81 worldwide citation)

A device for providing continuous monitoring of a human breathing and heart rate wherein a fluid-tight mattress is located in contact with the human and produces pressure signals in response to the breathing and heart rate. A pressure transducer is provided for interpreting the pressure signals for ...