Inventor · disambiguated record
Donald H. Douglas
Also filed as: DOUGLAS DONALD H
3 granted patents·80 citations·filing 1990–1993
73Inventor score
Top patents by PatentIndex Score
3 records- 0180US5423142AWeather-proof, vandal-proof, changeable display signUS ARMY·Filed 1993·Granted Jun 13, 1995·50 cites·6 claims
- 0244US5309994AMethod and apparatus for installing a wellU S ARMY CORPS OF ENGINEERS AS·Filed 1993·Granted May 10, 1994·19 cites·11 claims
- 0343US5092245AExplosive stemming deviceUS ARMY·Filed 1990·Granted Mar 3, 1992·11 cites·9 claims
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