Granted Patent
Utility
US 4,581,007 · App. 06/679,210
Adhesive closure bags and method for producing same
Inventor:
Ewald A. Kamp
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Dec 7, 1984
Inventor
Ewald A. Kamp
Assignee (at issue)
Union Carbide Corporation
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.