Granted Patent
Utility
US 5,320,233 · App. 08/114,001
Tamper evident lug cap
Inventor:
Bing Welch
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Aug 30, 1993
Inventor
Bing Welch
Assignee (at issue)
Aluminum Company of America
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.