Granted Patent
Utility
US 4,850,504 · App. 07/266,723
Spring ring easy-open positive-reclose hermetic food package
Inventors:
Paul E. Gindrod, Ray H. Griesbach, Gerald O. Hustad
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Nov 3, 1988
Inventors
Paul E. Gindrod
Ray H. Griesbach
Gerald O. Hustad
Assignee (at issue)
Oscar Mayer Foods Corporation
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.