Granted Patent
Utility
US 6,253,721 · App. 09/429,247
Swivel-mounted cam follower for a valve drive of an internal combustion engine
Inventors:
Wolfgang Mayer, Helmut Engelhardt, Walter Speil
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Oct 29, 1999
Inventors
Wolfgang Mayer
Helmut Engelhardt
Walter Speil
Assignee (at issue)
INA Wälzlager Schaeffler oHG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.