Granted Patent
Utility
US 4,136,582 · App. 05/678,972
Shaft and bore combination
Inventor:
Francis H. Boor
Patented Case
View Patent ↗
Granted: Jan 30, 1979
Filed: Apr 21, 1976
Inventor
Francis H. Boor
Assignee (at issue)
FAIRFIELD MANUFACTURING COMPANY, INC.
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.