Granted Patent
Utility
US 4,432,461 · App. 06/366,796
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Inventors:
George V. Mumford, Ernest Li
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Apr 9, 1982
Inventors
George V. Mumford
Ernest Li
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.