JM

John David Marsha

📍 Charlestown, NH: #18 of 33 inventorsTop 55%
🗺 New Hampshire: #7,386 of 12,181 inventorsTop 65%
Overall (All Time): #3,335,395 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7588509 Infinitely variable gear transmission with parallel hydraulic ratio control — 2009-09-15