HJ

Harold E. Douglass, Jr.

UN US NSA: 1 patents #34 of 171Top 20%
📍 Hanover, MD: #34 of 79 inventorsTop 45%
🗺 Maryland: #19,431 of 35,612 inventorsTop 55%
Overall (All Time): #3,986,343 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4709652 Pneumatic audio sweep generator Joseph W. Mahaffee, III 1987-12-01