HJ

Hartley F. Grandin, Jr.

📍 Marlborough, MA: #528 of 796 inventorsTop 70%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #4,103,825 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4182372 Mixing valve Donald R. Nelson 1980-01-08