Granted Patent
Utility
US 4,733,786 · App. 06/928,803
Container and innerseal capable of indicating heat tampering
Inventor:
Jeffrey O. Emslander
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Nov 7, 1986
Inventor
Jeffrey O. Emslander
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.