Granted Patent
Utility
US 6,729,489 · App. 10/216,116
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Inventor:
David B. Sanderson
Patented Case
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Granted: May 4, 2004
Filed: Aug 8, 2002
Inventor
David B. Sanderson
Assignee (at issue)
SKB 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.