Granted Patent
Utility
US 3,998,190 · App. 05/586,848
Roller follower with anti-rotation retainer
Inventor:
Frank E. Keske
Patented Case
View Patent ↗
Granted: Dec 21, 1976
Filed: Jun 13, 1975
Inventor
Frank E. Keske
Assignee (at issue)
Caterpillar Tractor Co.
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.