Granted Patent
Utility
US 5,652,663 · App. 08/282,720
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Inventor:
James Peter Zelten
Patented Case
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Granted: Jul 29, 1997
Filed: Jul 29, 1994
Inventor
James Peter Zelten
Assignee (at issue)
Polaroid Corporation
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.