Inventor · disambiguated record
Gary Grantland
Also filed as: GRANTLAND GARY
14 granted patents·114 citations·filing 1980–1997
92Inventor score
Files withGTE AUTOMATIC ELECTRIC INC5PALCO TELECOM INC5QUADRUM TELECOMMUNICATIONS INC2GTE AUTOMATIC ELECTRIC LAB INC1QVEX INC1
Top patents by PatentIndex Score
14 records- 0163US4896348APaystation monitor circuit to prevent fraudulent usePALCO TELECOM INC·Filed 1988·Granted Jan 23, 1990·27 cites·7 claims
- 0257US6223877B1Coin validation apparatusQVEX INC·Filed 1997·Granted May 1, 2001·24 cites·22 claims
- 0357US4435622ALatching relay hold circuit for a telephone instrumentGTE AUTOMATIC ELECTRIC INC·Filed 1982·Granted Mar 6, 1984·11 cites·9 claims
- 0447US4440981AElectronic hold circuitGTE AUTOMATIC ELECTRIC INC·Filed 1982·Granted Apr 3, 1984·8 cites·11 claims
- 0546US4454385ALatching relay hold release circuit for a telephone instrumentGTE AUTOMATIC ELECTRIC INC·Filed 1982·Granted Jun 12, 1984·7 cites·10 claims
- 0637US4442322AElectronic common switch having an improved receiver mating arrangementGTE AUTOMATIC ELECTRIC INC·Filed 1982·Granted Apr 10, 1984·4 cites·5 claims
- 0736US4988860AElectronic trigger for prepay type telephone paystationsPALCO TELECOM INC·Filed 1990·Granted Jan 29, 1991·12 cites·11 claims
- 0836US4447674AElectronic hold release circuitGTE AUTOMATIC ELECTRIC INC·Filed 1982·Granted May 8, 1984·4 cites·11 claims
- 0932US5737401AFull coin box signalling device for use with coin telephonesQUADRUM TELECOMMUNICATIONS INC·Filed 1996·Granted Apr 7, 1998·5 cites·9 claims
- 1032US4831650AAdaptive telephone receive controlPALCO TELECOM INC·Filed 1988·Granted May 16, 1989·3 cites·14 claims
- 1132US4821313APaystation transmitter ground detect circuitryPALCO TELECOM INC·Filed 1988·Granted Apr 11, 1989·2 cites·5 claims
- 1231US5084613AElectronic circuit for telephone paystation coin operated triggerQUADRUM TELECOMMUNICATIONS INC·Filed 1991·Granted Jan 28, 1992·3 cites·16 claims
- 1331US4309573ALoudspeaking substation circuitGTE AUTOMATIC ELECTRIC LAB INC·Filed 1980·Granted Jan 5, 1982·3 cites·5 claims
- 1425US4903294ALow voltage operated coin relayPALCO TELECOM INC·Filed 1989·Granted Feb 20, 1990·1 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →