Granted Patent
Utility
US 4,530,438 · App. 06/607,053
Tamper indicating packages
Inventor:
Thomas M. McDevitt
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: May 4, 1985
Inventor
Thomas M. McDevitt
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.