Granted Patent
Utility
US 4,557,713 · App. 06/571,067
Bag making machine and method
Inventor:
Peter Savich
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Jan 16, 1984
Inventor
Peter Savich
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.