HS

Harry Rohraff, Sr.

📍 Gaylord, MI: #3 of 10 inventorsTop 30%
🗺 Michigan: #973 of 4,313 inventorsTop 25%
Overall (1994): #39,117 of 165,921Top 25%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5375374 Combination manual and electric door opener — 1994-12-27