Granted Patent
Utility
US 6,233,535 · App. 09/117,831
Electric shaver or apparatus cooperating therewith and data-evaluation arrangement
Inventor:
Michael Petretty
Patented Case
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Granted: May 15, 2001
Filed: Aug 12, 1998
Inventor
Michael Petretty
Assignee (at issue)
The Braun 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.