DDSI
COMPUTER HARDWARE-NAMELY, INTERFACE DEVICES FOR CONVEYING DIGITAL SIGNALS FROM COMPUTERS TO INTERACTIVE DISPLAY TERMINALS, MAGNETIC TAPES USED IN OPERATING A COMPUTER GRAPHIC SYSTEM FOR READING, UPDATING AND OUTPUTING INFORMATION, AND MICROFILM RECORDERS, SCANNERS, AND UPDATE TERMINALS
Expired · August 16, 1971 · 72400198 ·