Granted Patent
Utility
US 5,209,043 · App. 07/845,307
Vacuum packaging method and apparatus
Inventor:
Vytautas Kupcikevicius
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Mar 3, 1992
Inventor
Vytautas Kupcikevicius
Assignee (at issue)
Viskase Companies, 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.