Granted Patent
Utility
US 5,638,549 · App. 08/606,642
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Inventor:
Piers M. Thomas
Patented Case
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Granted: Jun 17, 1997
Filed: Feb 27, 1996
Inventor
Piers M. Thomas
Assignee (at issue)
Patagonia, Inc.
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.