Granted Patent
Utility
US 4,307,918 · App. 06/039,440
Bearings
Inventor:
Mohamed E. Mohsin
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: May 15, 1979
Inventor
Mohamed 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.