Granted Patent
Utility
US 5,869,747 · App. 08/857,367
Food container internal pressure analysis
Inventor:
William H. Hulsman
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: May 15, 1997
Inventor
William H. Hulsman
Assignee (at issue)
William H. Hulsman
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.