Granted Patent
Utility
US 6,439,402 · App. 09/900,417
Display shelf insert having anti-rotation means
Inventor:
James David Robertson
Patented Case
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Granted: Aug 27, 2002
Filed: Jul 6, 2001
Inventor
James David Robertson
Assignee (at issue)
Display Industries, LLC
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.