Granted Patent
Utility
US 4,983,069 · App. 07/394,635
Drywell, drywell system and method for controlling the flow and direction of surface water
Inventor:
Thomas Florence
Patented Case
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Granted: Jan 8, 1991
Filed: Aug 16, 1989
Inventor
Thomas Florence
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.