Granted Patent
Utility
US 4,796,408 · App. 07/078,445
Method and apparatus for vacuum packaging
Inventor:
Bengt U. Mobark
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Jul 27, 1987
Inventor
Bengt U. Mobark
Assignee (at issue)
W. R. Grace & Co.
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.