Granted Patent
Utility
US 4,183,267 · App. 05/922,945
Nested bearing crank mechanism
Inventor:
George J. Jackson
Patented Case
View Patent ↗
Granted: Jan 15, 1980
Filed: Jul 10, 1978
Inventor
George J. Jackson
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.