Granted Patent
Utility
US 4,573,582 · App. 06/602,790
Ring seal tamper indicating device
Inventor:
Maximillian Kusz
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Apr 23, 1984
Inventor
Maximillian Kusz
Assignee (at issue)
Owens-Illinois Inc.
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.