Granted Patent
Utility
US 4,535,563 · App. 06/550,041
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Inventor:
Francois Mesnel
Patented Case
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Granted: Aug 20, 1985
Filed: Nov 8, 1983
Inventor
Francois Mesnel
Assignee (at issue)
Etablissements Mesnel, S.A.
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.