1
Mosier Carl E, Ely Richard I, Subbarao Wunnava V, Andree James E: Fiber wrap keyboard and switch.. Burroughs, September 21, 1983: EP0089239-A2 (1 worldwide citation)

Photo-optical keyboard matrix including a plurality of light transmitting optical fibers. The fibers are arranged in rows and columns with light generating means disposed at the row terminations of the fibers and light receptors are disposed at the column terminations of the fibers. The fibers are a ...


2
Subbarao Wunnava V, Mosier Carl E, Ely Richard I, Free James E: Fiber wrap keyboard and switch. Burroughs Corporation, CHUNG Edmund M, September 29, 1983: WO/1983/003314

Photo-optical keyboard matrix (10) including a plurality of light transmitting optical fibers (12). The fibers are arranged in rows and columns with light generating means (14) disposed at the row terminations of the fibers and light receptors (16) are disposed at the column terminations of the fibe ...