Assignee
INT TELESERVICE CORP
US·7 granted patents·70 citations·filing 1989–1993
Top patents by PatentIndex Score
7 records- 0158US5311582AIntegrated cocot and regulated paystation telephone systemINT TELESERVICE CORP·Filed 1993·Granted May 10, 1994·36 cites·28 claims
- 0236US5007079ACoin fraud prevention unit and modular configurations for pay telephone stationsINT TELESERVICE CORP·Filed 1989·Granted Apr 9, 1991·8 cites·20 claims
- 0335US5216707ACircuit for firing paystation coin relay using power derived from telephone line tip/ring voltageINT TELESERVICE CORP·Filed 1991·Granted Jun 1, 1993·9 cites·10 claims
- 0434US5108315APay telephone station repair technician's adapterINT TELESERVICE CORP·Filed 1991·Granted Apr 28, 1992·7 cites·20 claims
- 0533US4918724ACoin fraud preventing unit and modular configurations for pay telephone stationsINT TELESERVICE CORP·Filed 1989·Granted Apr 17, 1990·5 cites·41 claims
- 0632US5133528ACoinless telephone reinforcing plateINT TELESERVICE CORP·Filed 1991·Granted Jul 28, 1992·5 cites·4 claims
- 0725US5187739AAnswer supervision circuit for paystation telephone with non-muted microphoneINT TELESERVICE CORP·Filed 1991·Granted Feb 16, 1993·0 cites·11 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →