GS

Graig A. Spolek

UE US EPA: 1 patents #22 of 127Top 20%
📍 Portland, OR: #6,022 of 9,213 inventorsTop 70%
🗺 Oregon: #17,068 of 28,073 inventorsTop 65%
Overall (All Time): #3,874,142 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5007404 Woodstove for heated air forced into a secondary combustion chamber and method of operating same Robert E. Hall, John H. Wasser, Nelson L. Butts 1991-04-16