Inventor · disambiguated record
David Langenfeld
Also filed as: LANGENFELD DAVID · LANGENFELD DAVID P
3 granted patents·98 citations·filing 1995–2011
69Inventor score
Top patents by PatentIndex Score
3 records- 0176US5556253AAutomatic pipe-loading deviceVERMEER MFG CO·Filed 1995·Granted Sep 17, 1996·89 cites·7 claims
- 0231US5941320ADirectional boring machineVERMEER MFG CO·Filed 1997·Granted Aug 24, 1999·9 cites·14 claims
- 0325US9435161B2Latching rod boxNOVELO RUSSEL·Filed 2011·Granted Sep 6, 2016·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →