73697998
Nov 27, 1987
Jul 27, 1993
KEY TELEPHONE SYSTEMS COMPRISED OF TELEPHONES, TELEPHONE APPARATUS AND PARTS THEREOF PRIMARILY FOR SUCH USES AS RECEIVING AND PLACING LOCAL AND LONG DISTANCE TELEPHONE CALLS, PROVIDING INTERCOM COMMUNICATION FROM ONE TELEPHONE TO ANOTHER WITHIN THE SYSTEM, PROVIDING AUTOMATIC SELECTION AMONG DIFFERENT LONG DISTANCE TELEPHONE ALTERNATIVES, PROVIDING SPEAKERPHONE OPTION, PROVIDING SPEED DIALING OF FREQUENTLY CALLED PHONE NUMBERS, PROVIDING THE ABILITY TO RECORD DATA; NAMELY, DATE, TIME AND PHONE NUMBER DIALED AND WHICH STATION PLACED OR RECEIVED CALL, ON INCOMING AND OUTGOING CALLS, PROVIDING DISPLAY ON INSTRUMENT SHOWING TIME AND PHONE NUMBER DIALED
Electrical and Scientific Apparatus