Granted Patent
Utility
US 4,609,367 · App. 06/675,561
Bag making machine and method
Inventors:
Peter Savich, Paul Ziegelhoffer
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: Nov 28, 1984
Inventors
Peter Savich
Paul Ziegelhoffer
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.