Assignee
ACS COMMUNICATIONS
US17 patents
Top patents by PatentIndex Score
US4928307AMay 22, 1990
Time dependent, variable amplitude threshold output circuit for frequency variant and frequency invariant signal discrimination
ACS COMMUNICATIONS248 citations98
US5450496ASep 12, 1995
Communications headset having a detachable receiver capsule and cable pivot
ACS COMMUNICATIONS138 citations97
US5414769AMay 9, 1995
Articulated headset support
ACS COMMUNICATIONS38 citations95
USD344730SMar 1, 1994
Communications headset
ACS COMMUNICATIONS66 citations95
US5260997ANov 9, 1993
Articulated headset
ACS COMMUNICATIONS63 citations95
US5488657AJan 30, 1996
Apparatus for and method of operating an automatic log on/log off circuit in a telephone system by disconnecting a headset
ACS COMMUNICATIONS40 citations94
US5226077AJul 6, 1993
Headset amplifier with automatic log on/log off detection
ACS COMMUNICATIONS68 citations94
US4420657ADec 13, 1983
Adjustable headset
ACS COMMUNICATIONS163 citations93
US5070527ADec 3, 1991
Time dependant, variable amplitude threshold output circuit for frequency variant and frequency invarient signal discrimination
ACS COMMUNICATIONS26 citations92
US4864610ASep 5, 1989
Earpiece for a telephone headset
ACS COMMUNICATIONS98 citations92
USD299344SJan 10, 1989
Foam ear cushion for telephone headset or similar article
ACS COMMUNICATIONS99 citations92
US5353347AOct 4, 1994
Telephone headset amplifier with battery saver, receive line noise reduction, and click-free mute switching
ACS COMMUNICATIONS44 citations91
US4754484AJun 28, 1988
Convertible handset/headset for telephone
ACS COMMUNICATIONS130 citations91
US5381486AJan 10, 1995
Communications headset having a universal joint-mounted microphone boom
ACS COMMUNICATIONS97 citations90
USD318053SJul 9, 1991
Headset
ACS COMMUNICATIONS64 citations90
US4926961AMay 22, 1990
Hinged acoustical voice tube
ACS COMMUNICATIONS79 citations90
USD339355SSep 14, 1993
Telephone headset
ACS COMMUNICATIONS19 citations81