RB

Robert Bristol

📍 Beulah, MI: #2 of 10 inventorsTop 20%
🗺 Michigan: #18,390 of 86,293 inventorsTop 25%
Overall (All Time): #1,066,227 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
4465042 Crankless internal combustion engine 1984-08-14
4401068 Apparatus for split engine operation 1983-08-30
4363299 Crankless internal combustion engine 1982-12-14
4321904 Internal combustion engine with auxiliary combustion chamber 1982-03-30
4211082 Internal combustion engine with free floating auxiliary piston 1980-07-08