Inventor · disambiguated record
Douglas E. Lien
Also filed as: LIEN DOUGLAS E
2 granted patents·2 pending applications·46 citations·filing 1980–2008
60Inventor score
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4 records- 0175US5320443AConnecting pinCOMMERCIAL INTERTECH CORP·Filed 1992·Granted Jun 14, 1994·44 cites·17 claims
- 0241US2009072067A1Boat lift winch drive unitLIEN DOUGLAS E·Filed 2008·Application pending·0 cites
- 0333US2007079591A1Aquatic vegetation groomerLIEN DOUGLAS E·Filed 2006·Application pending·0 cites
- 0426USD268512SHydraulic locking valveBOECKERS ROGER W·Filed 1980·Granted Apr 5, 1983·2 cites·1 claims
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