73692880
Oct 30, 1987
Dec 18, 1990
TELEPHONE APPARATUS, TELEGRAPH APPARATUS, TELEPHONE SYSTEMS, NAMELY TELEPHONES, TELEPHONE SWITCHERS, PRIVATE BRANCH EXCHANGES, TELEPHONE ANSWERING MACHINES, RADIO TELEPHONES, DIGITAL TELEPHONE SWITCHING EQUIPMENT, AND PARTS THEREFORE, FOR HOME AND OFFICE USE AND FOR USE IN CONJUNCTION WITH COMPUTERS, COMPUTER MODEMS, AND TELEFACSIMILE; COMPUTERS
Electrical and Scientific Apparatus