Granted Patent
Utility
US 4,748,997 · App. 07/093,641
High pressure hydrant repair apparatus and method of repair
Inventor:
Waymon Ragsdale
Patented Case
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Granted: Jun 7, 1988
Filed: Sep 4, 1987
Inventor
Waymon Ragsdale
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.