Granted Patent
Utility
US 4,724,871 · App. 06/880,383
Plastic fitting spacer
Inventor:
Gary E. Griffin
Patented Case
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Granted: Feb 16, 1988
Filed: Jun 30, 1986
Inventor
Gary E. Griffin
Assignee (at issue)
Parker-Hannifin 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.