William Kohlmann Gauthier: Surgical retractor. Shoemaker & Mattare, June 29, 1976: US03965890 (246 worldwide citation)

A surgical retractor comprises a frame on which a plurality of retractor arm mounting members are mounted for movement along the frame, and retractor arms are carried by the mounting members for movement of the arms transversely of the frame, and collapsible and extensible retractor blades are carri ...

Jiri A Janata, Jarmila Janata: Novel protein-immobilizing hydrophobic polymeric membrane, process for producing same and apparatus employing same. The University of Utah, Trask & Britt, June 29, 1976: US03966580 (207 worldwide citation)

A protein-immobilizing hydrophobic polymeric membrane comprising an organic, hydrophobic polymeric substrate with a specific protein reactive group pendant therefrom in preselected concentration is disclosed. The protein reactive groups is a free group of a hydrocarbon chain which has one end thereo ...

Roger Ingemar Andersson, Stig Bertil Sultan: Ink supply arrangement for ink jet printers. Facit Aktiebolag, Alfred E Miller, June 29, 1976: US03967286 (200 worldwide citation)

An ink reservoir and supply arrangement associated with a printing head of an ink jet printer having means for filling the supply device automatically. The device is arranged to follow the movements of the printing head along an adjacent recording medium. A liquid filling member is adapted to transf ...

James E Batz: Data transmission system including an RF transponder for generating a broad spectrum of intelligence bearing sidebands. Northern Illinois Gas Company, Johnson Dienner Emrich & Wagner, June 29, 1976: US03967202 (194 worldwide citation)

A data transmission system for obtaining information from a plurality of data sources includes an interrogate source for transmitting RF interrogate signals to the locations of the data sources and a transponder associated with each data source for receiving the interrogate signals and for generatin ...

George Jay Lichtblau: A multi-frequency resonant tag circuit for use with an electronic security system having improved noise discrimination. Weingarten Maxham & Schurgin, June 29, 1976: US03967161 (189 worldwide citation)

An electronic security system adapted for use in a controlled area such as a retail store and employing a multi-frequency resonant tag circuit having distinct frequencies for detection and discrimination. An electromagnetic field is provided within the controlled area at a frequency which is swept t ...

John J Rozmus: Golf club. Frederick J Olsson, June 29, 1976: US03966210 (189 worldwide citation)

A gold club (either wood, iron or putter) constructed to cause the striking face to be aligned normal to the line of swing both during the swing and at the instant of impact and also constructed to provide, at the instant of impact, a high moment of inertia with respect to the center line, the align ...

Harvey H Wacks, Peter H Klose, Stanford R Ovshinsky, Robert W Hallman: Dry process production of archival microform records from hard copy. Energy Conversion Devices, Wallenstein Spangenberg Hattis & Strampel, June 29, 1976: US03966317 (171 worldwide citation)

A dry-process method and apparatus for producing archival microform records from light reflecting hard copy utilize a dry-process mask film strip which is photosensitive to and microimaged by light reflected and reduced or condensed from the hard copy and developed by heat to provide microimaged tra ...

Hamzeh Karami: Absorbent article with pattern and method. Colgate Palmolive Company, Powell L Sprunger, June 29, 1976: US03965906 (139 worldwide citation)

An absorbent article comprising an absorbent pad having a front surface, and sheet means, including a film of thermoplastic material, covering at least a portion of the front surface of the pad. A pattern is fused into the film to define a discontinuous front surface of the article.

Kenneth Charles Knowlton: Method and apparatus for using pushbutton telephone keys for generation of alpha-numeric information. Bell Telephone Laboratories Incorporated, R O Nimtz, June 29, 1976: US03967273 (136 worldwide citation)

The disclosure comprises a method and apparatus for using a pushbutton telephone keyboard in which a signal sequence representing a unique symbol is generated by pushing a first button on which the desired symbol is located, each button being labeled with at most a three by three array of symbols, a ...

Ian A Whyte, Louis G Ottobre, James P McGivern: Distribution network power line communication system including addressable interrogation and response repeater. Westinghouse Electric Corporation, D R Lackey, June 29, 1976: US03967264 (135 worldwide citation)

A distribution network power line communication system which is divided into addressable communication zones defined by repeaters located at the distribution transformers of the distribution network. Each repeater, when uniquely addressed by an interrogation signal from an interrogating source, stri ...