Granted Patent
Utility
US 6,584,747 · App. 09/862,581
Floor tile
Inventors:
Volker Kettler, Bernd Schneider, Wolfgang Wienstroer
Patented Case
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Granted: Jul 1, 2003
Filed: May 23, 2001
Inventors
Volker Kettler
Bernd Schneider
Wolfgang Wienstroer
Assignee (at issue)
H-W Industries GmbH & Co., KG
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.