Froning Edward C: Intervertebral disc prosthesis and instruments for locating same. Caplan Julian, April 8, 1975: US3875595 (882 worldwide citation)

A collapsible plastic bladder-like prosthesis of the same external form as the nucleus pulposis of an intervertebral disc has a stem through which liquid and/or plastic is introduced to inflate the prosthesis to natural form. The top and bottom have stud-like protrusions which fit into sockets which ...

Bone Arnold R: Fastener attachment apparatus and method. Dennison Manufacturing Company, Dike Bronstein Roberts Cushman & Pfund, April 8, 1975: US3875648 (360 worldwide citation)

Fastener attachment apparatus and method for separating a fastener attachment device comprising two end bars and a filament coupled therebetween from stock comprising two undivided and continuous side members and a plurality of cross links coupled therebetween and dispensing the devices through one ...

Friedman Joshua: Electrosurgery instrument. Demetron Corporation, April 8, 1975: US3875945 (278 worldwide citation)

An electrosurgery instrument having a radio frequency oscillator energized from a power supply controlled by a switching arrangement to produce either dc, full wave rectified ac, or half-wave rectified ac at its output, depending upon whether it is desired to operate in the cut, coagulate, or fulgur ...

Marinaccio Paul J, Knight Rodney A: Process for producing microporous films and products. AMF Incorporated, Price George W, Worth Charles J, April 8, 1975: US3876738 (178 worldwide citation)

Microporous films are produced by a process of quenching a polymer solution cast in a quench bath containing a non-solvent system for the polymer to form micropores in the resulting polymer film.

Godshalk James B: Method and apparatus for determining battery performance at one temperature when battery is at another temperature. Fox Products Company, Roylance Abrams Berdo & Kaul, April 8, 1975: US3876931 (137 worldwide citation)

Lead-acid storage batteries of various load ratings are tested with at least service station accuracy by discharging the battery at a known temperature and a single predetermined load, irrespective of the actual load rating of the battery, to provide an electrical quantity representative of the term ...

Wachtler Gunter, Straszer Wolfgang, Uri Peter, Tschernev Russi: Gaming machine. Brisebois & Kruger, April 8, 1975: US3876208 (128 worldwide citation)

An electronically controlled gaming machine having poker-like rules of play, the machine comprises a matrix of card memory stages in rows and columns, each memory stage having three conditions and an output which is energised in one of the conditions. An indicator device includes a plurality of indi ...

Rennhard Hans H: Dietetic foods. Pfizer, Connolly and Hutz, April 8, 1975: US3876794 (127 worldwide citation)

Non-nutritive carbohydrate substitutes are prepared by polycondensation of saccharides in the presence of polycarboxylic acid catalyst at reduced pressure and are useful in dietetic food compositions.

Sprokel Gerard J: Birefringent liquid crystal structure. International Business Machines Corporation, Powers Henry, April 8, 1975: US3876287 (127 worldwide citation)

A field-effect liquid crystal structure having birefringent properties controlled by crossed electric fields in conjunction with crossed polarizing units.

Clark Robert W, Dolsen Philip C, Kinker Donald E: Teller-assisted currency dispenser system. Diebold Incorporated, Frease & Bishop, April 8, 1975: US3876864 (100 worldwide citation)

An automatic banking system which offers personal teller assistance to a bank customer who may be having difficulty in using an automatic banking unit at a remote customer station to carry out any one of a number of banking services offered by a complete automatic banking system, such as depositing, ...

Franklin Nick F: Venturi exhaust cooler. Wagner Minning Equipment, Schermerhorn Lee R, April 8, 1975: US3875745 (95 worldwide citation)

The kinetic energy of the exhaust gas from an internal combustion engine is utilized as a driving fluid to aspirate a large volume of quiescent ambient air as a driven fluid for cooling the exhaust gas quickly in a very short path of travel. This mode of operation is to be distinguished from convent ...