Granted Patent
Utility
US 4,339,156 · App. 06/261,113
Roller-idler assembly for crawler undercarriage
Inventor:
Richard E. Livesay
Patented Case
View Patent ↗
Granted: Jul 13, 1982
Filed: Aug 29, 1980
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.