Granted Patent
Utility
US 4,726,596 · App. 06/903,607
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Inventor:
Harrold Ulmer
Patented Case
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Granted: Feb 23, 1988
Filed: Sep 5, 1986
Inventor
Harrold Ulmer
Assignee (at issue)
Whittar Industries, Ltd.
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.