Granted Patent
Utility
US 6,536,693 · App. 09/755,694
Rock crusher seal
Inventors:
Albert Van Mullem, Bernard R. McCready, Mark Zawlocki
Patented Case
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Granted: Mar 25, 2003
Filed: Jan 5, 2001
Inventors
Albert Van Mullem
Bernard R. McCready
Mark Zawlocki
Assignee (at issue)
SANDVIK AB
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.