Granted Patent
Utility
US 4,239,303 · App. 05/965,945
Full contact crankshaft bearing
Inventor:
Robert R. Backlin
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Dec 4, 1978
Inventor
Robert R. Backlin
Assignee (at issue)
Allis-Chalmers Corporation
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.