Granted Patent
Utility
US 4,978,016 · App. 07/401,966
Tamper indicating closure having retaining hoop with relief windows
Inventor:
Thomas H. Hayes
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: Sep 1, 1989
Inventor
Thomas H. Hayes
Assignee (at issue)
ANCHOR HOCKING, 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.