Granted Patent
Utility
US 4,457,566 · App. 06/274,385
Bearings
Inventor:
Mohammed E. Mohsin
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Jun 17, 1981
Inventor
Mohammed E. Mohsin
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.