Inventor · disambiguated record
Robert D. Pettigrew
Also filed as: PETTIGREW ROBERT · PETTIGREW ROBERT D
4 granted patents·140 citations·filing 1981–1990
80Inventor score
Top patents by PatentIndex Score
4 records- 0170US4963034ALow-delay vector backward predictive coding of speechUNIV FRASER SIMON·Filed 1989·Granted Oct 16, 1990·53 cites·9 claims
- 0266US4769587APower factor control with overvoltage and undervoltage override control in a capacitor control system for a distribution systemBECKWITH ELECTRIC CO·Filed 1987·Granted Sep 6, 1988·45 cites·14 claims
- 0349US4323838ARMS Controlled load tap changing transformerBECKWITH ELECTRIC CO INC·Filed 1981·Granted Apr 6, 1982·11 cites·7 claims
- 0448US5117175ARemote bias voltage setting LTC control systemPETTIGREW ROBERT D·Filed 1990·Granted May 26, 1992·31 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →