1
Maydan Dan, Cohen Melvin Irwin, Kerwin Robert Eugene: Recording and display method and apparatus. Bell Telephone Laboratories Incorporated, March 13, 1973: US3720784 (53 worldwide citation)

An image comprising a multitude of small discrete holes is formed by a laser in a radiation absorbing film. Appropriate means form a large number of brief-duration, amplitude-modulated pulses of optical radiation. These pulses are then deflected and focused to form an array of discrete holes in a fi ...


2
Cohen Melvin Irwin, Fulton Alan William: Encoding of read only memory by laser vaporization. Bell Telephone Labortories Incorporated, June 19, 1973: US3740523 (30 worldwide citation)

A beam-lead silicon integrated circuit read-only memory is made in a conventional manner by forming an array of transistors on a silicon substrate, except that the gold portion of one conductive lead to each memory cell is severed, as by gold etching. Conductive connection to each memory cell is, ho ...


3
Cohen Melvin Irwin, Weick Walter Werner, West John Wesley: Laser machining method and apparatus. Bell Telephone Laboratories Incorporated, November 23, 1971: US3622742 (24 worldwide citation)

Thin film integrated circuits are formed by coating insulative substrates with conductive film and mounting them on the periphery of a rotating drum. As the drum rotates, a switched laser machines the circuit pattern by vaporizing parts of the metal film of successive substrates. Light from another ...