73798187
May 8, 1989
Oct 9, 1990
COMMUNICATION MONITORS; TEST AND MEASURING UNITS FOR ELECTRICAL COMMUNICATION SYSTEMS; POLAR RELAYS FOR TESTING COMMUNICATION SYSTEMS; TELEPHONES; TELEGRAPH UNITS; TELETYPE UNITS; TRANSFORMERS; AUDIO AMPLIFIERS; INDUCTORS; ELECTRONIC COMMUNICATION UNITS FOR AUDIO AND VIDEO SIGNALS; MULTIPLEXORS; MOUTHPIECE ADAPTER UNITS; AUTOMATIC MULTILINE TELEPHONE COMMUNICATION ANSWERING UNITS COMPRISED OF VISUAL DISPLAY UNITS AND SOUND RECORDERS; ELECTRONIC UNIT FOR LOCATING CABLES; EMERGENCY TELEPHONE DIALERS; TELEPHONE TONE GENERATORS; AUTOMATIC TELEPHONE DIALERS; TELEPHONE HANDSETS; WATERPROOF CABLE; TELECOMMUNICATIONS TEST UNITS FOR TESTING TELEPHONE LINES
Electrical and Scientific Apparatus