Granted Patent
Utility
US 5,417,440 · App. 08/242,601
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Inventors:
Robert L. Barrie, Bruce Barrie
Patented Case
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Granted: May 23, 1995
Filed: May 13, 1994
Inventors
Robert L. Barrie
Bruce Barrie
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.