Granted Patent
Utility
US 4,932,648 · App. 07/312,185
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Inventor:
Paul W. Ahrens
Patented Case
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Granted: Jun 12, 1990
Filed: Feb 21, 1989
Inventor
Paul W. Ahrens
Assignee (at issue)
Miracle Recreation Equipment Company
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.