Granted Patent
Utility
US 4,277,876 · App. 06/075,929
Method for rotating a track chain bushing
Inventor:
Richard E. Livesay
Patented Case
View Patent ↗
Granted: Jul 14, 1981
Filed: Sep 17, 1979
Inventor
Richard E. Livesay
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.