Inventor · disambiguated record
Douglas R. Frei
Also filed as: FREI DOUGLAS R
2 granted patents·1 pending application·46 citations·filing 1985–2013
64Inventor score
Top patents by PatentIndex Score
3 records- 0185US8864064B2Wind power generation system for lighter than air (LTA) platformsNORTHROP GRUMMAN SYSTEMS CORP·Filed 2013·Granted Oct 21, 2014·11 cites·15 claims
- 0261US4723214AAutomatic camber controlGRUMMAN AEROSPACE CORP·Filed 1985·Granted Feb 2, 1988·35 cites·7 claims
- 0343US2011192938A1Wind power generation system for lighter than air (lta) platformsNORTHROP GRUMMAN SYSTEMS CORP·Filed 2010·Application pending·0 cites
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