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Donald W. Keehan

UA US Army: 1 patents #2,720 of 6,974Top 40%
📍 Fairfax, VA: #697 of 1,249 inventorsTop 60%
🗺 Virginia: #18,729 of 34,511 inventorsTop 55%
Overall (All Time): #4,025,043 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4554648 Electronic earth seismic noise measuring method Charles B. Greer, John A. Springer 1985-11-19