Granted Patent
Utility
US 4,759,572 · App. 07/040,027
Tube connector
Inventor:
William Daniel Richardson
Patented Case
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Granted: Jul 26, 1988
Filed: Apr 20, 1987
Inventor
William Daniel Richardson
Assignee (at issue)
Tuthill 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.