Granted Patent
Utility
US 6,381,613 · App. 09/188,748
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Inventors:
Richard D. Gallery, Michael K. Verhagen
Patented Case
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Granted: Apr 30, 2002
Filed: Nov 9, 1998
Inventors
Richard D. Gallery
Michael K. Verhagen
Assignee (at issue)
U.S. Philips 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.