Granted Patent
Utility
US 4,885,820 · App. 07/114,983
Plastic hinge, hinged material, and method for hinging
Inventors:
Jack P. Erceg, Tzong In Yeh
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Oct 30, 1987
Inventors
Jack P. Erceg
Tzong In Yeh
Assignee (at issue)
Packaging Industries Group, Inc.
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.