Granted Patent
Utility
US 4,524,876 · App. 06/643,590
Tamper indicating child-resistant package
Inventor:
Maximillian Kusz
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Aug 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.