Inventor · disambiguated record
David L. Bernhardt
Also filed as: BERNHARDT DAVID L
3 granted patents·130 citations·filing 1981–1994
75Inventor score
Top patents by PatentIndex Score
3 records- 0189US4423646AProcess for producing a rotary drilling bitN C SECURITIES HOLDING INC·Filed 1981·Granted Jan 3, 1984·98 cites·18 claims
- 0276US4682643AMethod of producing molded parts and casting pattern thereforNU CON CORP·Filed 1985·Granted Jul 28, 1987·19 cites·8 claims
- 0355US5527153AVariable pitch propellerFiled 1994·Granted Jun 18, 1996·13 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →