RB

Robert Bristol

📍 Beulah, MI: #1 of 1 inventorsTop 100%
🗺 Michigan: #148 of 1,972 inventorsTop 8%
Overall (1982): #8,624 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4363299 Crankless internal combustion engine 1982-12-14
4321904 Internal combustion engine with auxiliary combustion chamber 1982-03-30