Granted Patent
Utility
US 4,238,070 · App. 06/084,885
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Inventor:
Russell J. Lyons
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Oct 15, 1979
Inventor
Russell J. Lyons
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.