73666918
Jun 16, 1987
Jun 7, 1988
[ ELECTRIC CALCULATING MACHINES; COMPUTERS; DATA RECORDERS; ] MODEMS [ ; MODULATORS; DEMODULATORS; DISK DRIVE UNITS; STREAMERS; PACKET RADIO CONTROLLERS; ACOUSTIC COUPLERS AND COMPUTER PERIPHERALS; FLOPPY DISKS; AND COMPUTER PROGRAMS ]
Electrical and Scientific Apparatus