Granted Patent
Utility
US 4,747,487 · App. 07/102,353
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Inventor:
Prentice J. Wood
Patented Case
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Granted: May 31, 1988
Filed: Sep 29, 1987
Inventor
Prentice J. Wood
Assignee (at issue)
The Mead 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.