Granted Patent
Utility
US 5,328,048 · App. 08/014,663
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Inventor:
Eric Stein
Patented Case
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Granted: Jul 12, 1994
Filed: Feb 8, 1993
Inventor
Eric Stein
Assignee (at issue)
Otto Industries, 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.