Granted Patent
Utility
US 5,197,620 · App. 07/874,488
Venting closure
Inventor:
James L. Gregory
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Apr 27, 1992
Inventor
James L. Gregory
Assignee (at issue)
Owens-Illinois Closure 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.