Inventor · disambiguated record
William F. Macpherson
Also filed as: MACPHERSON WILLIAM F · MACPHERSON WILLIAM FREDERICK
9 granted patents·110 citations·filing 1976–1983
88Inventor score
Top patents by PatentIndex Score
9 records- 0176US4408248AProtection circuitBELL TELEPHONE LABOR INC·Filed 1981·Granted Oct 4, 1983·37 cites·11 claims
- 0275US4656366AControl circuitry using two branch circuits for high voltage solid-state switchesAMERICAN TELEPHONE & TELEGRAPH·Filed 1982·Granted Apr 7, 1987·20 cites·7 claims
- 0370US4021617ATelephone ringer isolatorBELL TELEPHONE LABOR INC·Filed 1976·Granted May 3, 1977·14 cites·10 claims
- 0459US4499532AFloating battery feed circuitAT & T BELL LAB·Filed 1983·Granted Feb 12, 1985·13 cites·12 claims
- 0553US4345163AControl circuitry for high voltage solid-state switchesBELL TELEPHONE LABOR INC·Filed 1980·Granted Aug 17, 1982·9 cites·3 claims
- 0648US4309715AIntegral turn-on high voltage switchBELL TELEPHONE LABOR INC·Filed 1979·Granted Jan 5, 1982·7 cites·10 claims
- 0748US4250409AControl circuitry using a pull-down transistor for high voltage field terminated diode solid-state switchesBELL TELEPHONE LABOR INC·Filed 1979·Granted Feb 10, 1981·7 cites·11 claims
- 0838US4166931AMiniature bridge lifter for telephone linesBELL TELEPHONE LABOR INC·Filed 1978·Granted Sep 4, 1979·3 cites·10 claims
- 0929US4447744AControl circuitry for high voltage solid-state switchesBELL TELEPHONE LABOR INC·Filed 1981·Granted May 8, 1984·0 cites·10 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →