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John R. Heckrotte, Sr.

📍 Phoenix, AZ: #41 of 155 inventorsTop 30%
🗺 Arizona: #110 of 528 inventorsTop 25%
Overall (1982): #52,879 of 81,411Top 65%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4364287 Method for making a key for driving tamper-proof bolt — 1982-12-21