Granted Patent
Utility
US 4,126,220 · App. 05/857,099
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Inventor:
Harry I. Roccaforte
Patented Case
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Granted: Nov 21, 1978
Filed: Dec 5, 1977
Inventor
Harry I. Roccaforte
Assignee (at issue)
Champion International Corporation Limited
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.