DF

Douglas A. Freeman

IT International Telephone And Telegraph: 2 patents #96 of 507Top 20%
📍 Portland, OR: #4,612 of 9,213 inventorsTop 55%
🗺 Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #2,351,048 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4492329 Powder actuated tool John Benson, Harold L. Hanel 1985-01-08
4487353 Powder actuated tool John Benson, Harold L. Hanel 1984-12-11