Granted Patent
Utility
US 4,286,894 · App. 06/022,448
Tolerance rings
Inventor:
Raymond A. Rongley
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Mar 21, 1979
Inventor
Raymond A. Rongley
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.