Granted Patent
Utility
US 5,178,500 · App. 07/690,864
Fastener with locking retainer ring
Inventor:
Edgar L. Stencel
Patented Case
View Patent ↗
Granted: Jan 12, 1993
Filed: Apr 24, 1991
Inventor
Edgar L. Stencel
Assignee (at issue)
MAG Aerospace Industries, LLC
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.