Inventor

SPAMAN DONALD R

US3 patents

Patents

3 patents

US4847727AJul 11, 1989

Magnetic memory disc purge erase apparatus

RAYMOND ENGINEERING12 citations68

US4832283AMay 23, 1989

Tape transport cartridge

RAYMOND ENGINEERING7 citations66

US4095146AJun 13, 1978

Reel-to-reel drive with speed control

RAYMOND ENGINEERING9 citations66