Granted Patent
Utility
US 6,202,764 · App. 09/144,860
Straight line, pump through entry sub
Inventors:
Muriel Wayne Ables, Ronald Eugene Ables
Patented Case
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Granted: Mar 20, 2001
Filed: Sep 1, 1998
Inventors
Muriel Wayne Ables
Ronald Eugene Ables
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.