Granted Patent
Utility
US 4,448,337 · App. 06/375,400
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Inventor:
Gary M. Cronce
Patented Case
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Granted: May 15, 1984
Filed: May 6, 1982
Inventor
Gary M. Cronce
Assignee (at issue)
Masco 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.