Granted Patent
Utility
US 4,765,757 · App. 07/133,598
Self-aligning spherical bushing means
Inventor:
Werner Hartl
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Dec 14, 1987
Inventor
Werner Hartl
Assignee (at issue)
Roller Bearing Company of America, 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.