HG

Henry R. De Graan

📍 Walnut, CA: #501 of 870 inventorsTop 60%
🗺 California: #247,236 of 386,348 inventorsTop 65%
Overall (All Time): #4,097,921 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4292876 Washer 1981-10-06