Paul Gauselmann: Slot machine. ADP Automaten, Oblon Fisher Spivak McClelland & Maier, April 15, 1980: US04198052 (303 worldwide citation)

A slot machine with at least three coaxially disposed wheels having a plurality of playing symbols on the peripheries thereof, wherein a plurality of columns of windows, one column for each window, are disposed in front of the wheels to enable viewing of a preselected number of symbols of each wheel ...

Alexander Beck, Jean Marcel Piffaretti, Dietmar Weinmann: Permanent magnet device for implantation. BBC Brown Boveri & Company, Oblon Fisher Spivak McClelland & Maier, April 15, 1980: US04197840 (258 worldwide citation)

A permanent magnet device for implantation in the eyelids including at least two magnet bodies enclosed in substantially shape-dependent manner by an enveloping body consisting of a ductile, tissue-compatible material, the enveloping body being substantially gastight and having at least one constric ...

Harish R Anada: Process for in situ coal gasification. Ramcor, James J Brown, April 15, 1980: US04197911 (226 worldwide citation)

In situ coal gasification to form a methane rich gas is carried out by injecting a lower aliphatic alcohol such as methanol into a coal seam, raising the temperature to cause dissociation of the alcohol and injecting water into the same. Nascent hydrogen is produced which reacts with the coal to for ...

Masanori Nagata: Money transaction system. Omron Tateisi Electronics Co, Sughrue Rothwell Mion Zinn and Macpeak, April 15, 1980: US04197986 (201 worldwide citation)

A transaction system comprising a card having a card balance recorded therein, at least one terminal transaction processor operable on the basis of on-line and off-line computer schemes, and a center operatively associated with the terminal transaction processor and having a file for recording there ...

David H Alexander, George H Hershman, Michael D Jack, N John Koda, Randahl B Lloyd: Monolithic imager for near-IR. Hughes Aircraft Company, Elliott N Kramsky, W H MacAllister, April 15, 1980: US04198646 (147 worldwide citation)

A monolithic imager utilizing a plurality of detector cells is formed on a common intrinsic substrate. Backside illumination in the near-IR region generates hole-electron pairs in the intrinsic material which may be depleted throughout its thickness by CCD-range voltages applied by the imager's read ...

James F Simko: Insulating jacket for bottles. Barnes Kisselle Raisch & Choate, April 15, 1980: US04197890 (144 worldwide citation)

An insulation jacket for beverage bottles which includes a cylindrical wrapper of thin flexible insulating material shaped to fit a bottle combined with one or more elastic elongate inserts to permit the wrapper to adjust to various diameters and also fit snugly around a bottle. Top and bottom closu ...

Bernard Jacquet, Gerard Lang: Treating hair with quaternized polymers. L Oreal, Cushman Darby & Cushman, April 15, 1980: US04197865 (142 worldwide citation)

A quaternized polymer having recurring units of the formula ##STR1## wherein X.sup..crclbar. represents an anion derived from an organic or mineral acid;

Louis Bucalo: Method for structure for situating in a living body agents for treating the body. Steinberg & Blake, April 15, 1980: US04197846 (124 worldwide citation)

By way of a suitable syringe, for example, there is injected into the tissue of a living being an absorbable viscous substance in which a plurality of solid bodies are suspended to an extent sufficient to be distributed throughout the viscous substance and in an amount sufficient to change the chara ...

Robert B Northrop: Ultrasonic respiration/convulsion monitoring apparatus and method for its use. April 15, 1980: US04197856 (120 worldwide citation)

Apparatus for monitoring respiratory and/or convulsive movements includes a closed loop phase lock system which measures changes in the air path length of continuous wave ultrasound transmitted to and reflected from (the chest/abdomen area of) a subject, and provides an output change signal proporti ...

Joseph H Schulman, Jozef I Kie Sioe Tan: Implantable human tissue stimulator with memory protect means. Pacesetter Systems, Freilich Hornbaker Wasserman Rosen & Fernandez, April 15, 1980: US04197850 (116 worldwide citation)

In an implantable human tissue stimulator with a volatile memory an arrangement is provided to protect against the stimulating circuitry producing pulses as a function of unknown parameters in the memory, as a result of inadequate power to the memory from a rechargeable power source, e.g. a recharge ...