Granted Patent
Utility
US 4,261,462 · App. 06/140,163
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Inventor:
Lawrence S. Wysocki
Patented Case
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Granted: Apr 14, 1981
Filed: Apr 14, 1980
Inventor
Lawrence S. Wysocki
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.