Granted Patent
Utility
US 4,984,700 · App. 07/437,592
Tamper indicating closure assembly
Inventor:
Michael G. Knickerbocker
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Nov 17, 1989
Inventor
Michael G. Knickerbocker
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.