Granted Patent
Utility
US 4,552,279 · App. 06/650,490
Container closure
Inventors:
Bruce M. Mueller, Zbignew Swierczek
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Sep 14, 1984
Inventors
Bruce M. Mueller
Zbignew Swierczek
Assignee (at issue)
Owens-Illinois 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.