Granted Patent
Utility
US 4,329,000 · App. 06/261,092
Self-contained, damped ball bearing assembly
Inventor:
Frank E. Keske
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Aug 28, 1980
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.