Granted Patent
Utility
US 4,679,725 · App. 06/846,826
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Inventor:
Jerry F. Wilson
Patented Case
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Granted: Jul 14, 1987
Filed: Mar 13, 1986
Inventor
Jerry F. Wilson
Assignee (at issue)
Manville Sales 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.