Granted Patent
Utility
US 4,283,353 · App. 06/039,192
Tamper proof sealing plug
Inventor:
Robert J. Miller
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: May 15, 1979
Inventor
Robert J. Miller
Assignee (at issue)
Colt Industries Operating 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.