Clarkston, Michigan
United States
4
2008-05-08
Peter Campbell from Clarkston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Barrel-type internal combustion engine
#2 | 2008-05-08Barrel-type internal combustion engine
#3 | 2008-05-08Barrel-type internal combustion engine
#4 | 2008-05-08Barrel-type internal combustion engine
4168499 ⎘