Granted Patent
Utility
US 4,877,340 · App. 07/207,542
Process for deriving the contact geometry for raceways and rollers of a roller bearing
Inventor:
Michael R. Hoeprich
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jun 16, 1988
Inventor
Michael R. Hoeprich
Assignee (at issue)
THE TIMKEN COMPANY
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.