Granted Patent
Utility
US 4,785,972 · App. 07/073,756
Pressure generating system for a disposable container
Inventor:
Paul H. LeFevre
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Jul 14, 1987
Inventor
Paul H. LeFevre
Assignee (at issue)
Adolph Coors Company
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.