Granted Patent
Utility
US 4,748,735 · App. 07/030,491
Method of manufacturing tamper evident composite closure
Inventor:
Thomas H. Hayes
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Mar 27, 1987
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.