Granted Patent
Utility
US 6,644,552 · App. 10/191,942
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Inventor:
John Herslow
Patented Case
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Granted: Nov 11, 2003
Filed: Jul 9, 2002
Inventor
John Herslow
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.