Granted Patent
Utility
US 4,407,417 · App. 06/219,248
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Inventor:
Daniel J. Boyle
Patented Case
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Granted: Oct 4, 1983
Filed: Dec 22, 1980
Inventor
Daniel J. Boyle
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.