Granted Patent
Utility
US 6,758,021 · App. 10/304,774
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Inventor:
Julian P. Trangsrud
Patented Case
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Granted: Jul 6, 2004
Filed: Nov 26, 2002
Inventor
Julian P. Trangsrud
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.