Inventor · disambiguated record
Petrus A. M. Spierings
Also filed as: SPIERINGS PETRUS A M
3 granted patents·182 citations·filing 1976–1991
77Inventor score
Top patents by PatentIndex Score
3 records- 0190US4083651AWind turbine with automatic pitch and yaw controlUNITED TECHNOLOGIES CORP·Filed 1976·Granted Apr 11, 1978·61 cites·10 claims
- 0283US4679848ABack support mechanism and methodSPIERINGS PETRUS A M·Filed 1986·Granted Jul 14, 1987·86 cites·45 claims
- 0367US5173069AAutorotative flyerMAINSTREAM MARKETING INC·Filed 1991·Granted Dec 22, 1992·35 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →