HJ

Harold B. Donahue, Jr.

📍 Stow, MA: #227 of 318 inventorsTop 75%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,643,660 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5878502 Apparatus and method for comparing a grade to a predetermined slope — 1999-03-09