Granted Patent
Utility
US 4,573,598 · App. 06/728,417
Child-resistant package with tamper indicating device
Inventor:
Robert A. Perry
Patented Case
View Patent ↗
Granted: Mar 4, 1986
Filed: Apr 29, 1985
Inventor
Robert A. Perry
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.