Aachen
Germany
3
2023-06-29
The entities that hold a legal rights for patent applications filed by inventor Bey Ralf:
Ralf Bey from Aachen, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Internal combustion engine with a crankcase ventilation means
#2 | 2020-01-02Connecting rod of an internal combustion engine for changing the compression ratio
#3 | 2009-05-28Combined Roller- and Slide Bearing
2602593 ⎘