Granted Patent
Utility
US 4,687,113 · App. 06/890,278
Tamper evident closure
Inventor:
Randy F. Reeve
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Jul 29, 1986
Inventor
Randy F. Reeve
Assignee (at issue)
Calmar Holdings LLC
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.