1
Insler Julius R, Leslie Allen R, Vigneri Ronald J: Laser printing system. Saxon, August 7, 1973: US3751587 (42 worldwide citation)

A modulated laser beam developed in a non-contacting printing arrangement sweeps across an ink bearing carrier disposed adjacent a printing surface, e.g., an untreated paper sheet. In successive line sweeps, each slightly displaced from the prior sweep line, the incident laser beam selectively trans ...


2
Schlisser Gabor, Insler Julius R: Segment locating intrusion alarm system. Holobeam, January 16, 1973: US3711846 (36 worldwide citation)

An intrusion alarm protection system for use in an area enclosed by a multi-segmented perimeter. An intrusion into the area actuates an alarm and the segment in which the intrusion occurs is uniquely identified. In the embodiment of the invention herein disclosed, a beam is directed around the prote ...


3
Schlisser Gabor, Insler Julius R: Optical intrusion alarm system. Holobeam, June 12, 1973: US3739372 (13 worldwide citation)

An intrusion alarm system comprises a pair of light sources which produce overlapping light beams that effectively cover the entire area being protected. When either of the beams is interrupted by an intrusion, an alarm is caused to be actuated. In the embodiment of the invention here described, one ...