Robert A Macur: Miniature probe having multifunctional electrodes for sensing ions and gases. General Electric Company, Ralph G Hohenfeldt, Fred Wiviott, May 18, 1976: US03957613 (224 worldwide citation)

A miniature probe for simultaneously sensing ion concentrations and partial pressures of gases in a sample comprises plural sensing electrode systems at least one of which is surrounded by an electrolyte and a gas permeable or ion permeable diffusion barrier. The systems are united structurally to f ...

William Friedrich Ehrsam, Carl H W Meyer, Robert Lowell Powers, Paul Norman Prentice, John Lynn Smith, Walter Leonard Tuchman: Block cipher system for data security. International Business Machines Corporation, Edwin Lester, May 18, 1976: US03958081 (202 worldwide citation)

A device for ciphering message blocks of data bits under control of a cipher key. The cipher device performs an enciphering process for each message block of data by carrying out a predetermined number of iteration operations in the first of which a first half of the message block of data bits is fi ...

Nils A Normann: Method and apparatus for recording activity in intact nerves. Baylor College of Medicine, Fulbright & Jaworski, May 18, 1976: US03957036 (181 worldwide citation)

A method and apparatus is provided which will attenuate bioelectric interference when measuring the activity in an intact nerve. An electrode probe is provided having first and second electrodes positioned on opposite sides of a thin, flexible, insulating carrier. The probe is inserted between the n ...

Rene J Perdreaux Jr: Ultrasonic device and method. Cavitron Corporation, Philip H Pohl, Philip Sperber, May 18, 1976: US03956826 (172 worldwide citation)

An ultrasonic hand-held cleaning device having a housing enclosing a casing, an energyzing winding about the casing, and a fluid conduit attached to the interior of the casing. A sleeve is insertably mounted into the end of the casing, and acts to support a connecting body at a spaced distance withi ...

Robert Lee Fuson, Wesley S Larson: Six-way stopcock. Arbrook, John J Simkanich, May 18, 1976: US03957082 (165 worldwide citation)

A selection valve, creating a minimal flow-through turbulence for use in the administration of three separately supplied intravenous fluids, for selecting with one-handed operation any one of the fluids connected or a mixture of any two fluids adjacently connected, is provided having a body with a c ...

Bruno Vieri: Communications systems having a selective facsimile output. Xerox Corporation, May 18, 1976: US03958088 (130 worldwide citation)

A switched communications system including store and forward facilities is provided in accordance with the teachings of the present invention wherein, in an exemplary embodiment, any of a plurality of teleprinter or teletypewriter peripherals may be given access to the communication system and input ...

Terry George Athanas: Deep depletion insulated gate field effect transistors. RCA Corporation, H Christoffersen, R P Williams, May 18, 1976: US03958266 (106 worldwide citation)

A deep depletion insulated gate field effect transistor is made in a silicon layer on a sapphire substrate, so that its threshold voltage is relatively independent of the thickness of the silicon layer. The silicon layer has two parts, namely, a lower part adjacent to the sapphire substrate which is ...

Waldemar A Ayres: Plasma separator with barrier to eject sealant. Becton Dickinson and Company, Kane Dalsimer Kane Sullivan and Kurucz, May 18, 1976: US03957654 (96 worldwide citation)

A blood collection and separator assembly capable of separating blood into its component parts of plasma or serum, the light phase, and cellular portion, the heavy phase, is disclosed. The assembly comprises a container having one open end for receiving blood and a two part barrier assembly slidably ...

Frank Schwarz: Intrusion detection devices employing multiple scan zones. Security Organization Supreme SOS, William G Rhines, May 18, 1976: US03958118 (96 worldwide citation)

This invention relates to intrusion detection devices, and in one embodiment includes an array of infra-red detectors with associated means for selectively increasing the number of scan zones which may be monitored by the same detector array, by providing an optical system with reflectors and/or len ...

Melvin M Noseworthy: Doxycycline parenteral compositions. Pfizer, Connolly and Hutz, May 18, 1976: US03957980 (96 worldwide citation)

Doxycycline compositions suitable for the preparation of injectable liquid preparations are disclosed.

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