Granted Patent
Utility
US 4,943,167 · App. 07/038,234
Plastic bag and method and apparatus of manufacture
Inventor:
Edward S. Gelbard
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Jun 12, 1987
Inventor
Edward S. Gelbard
Assignee (at issue)
HILEX POLY CO. 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.