Granted Patent
Utility
US 5,452,765 · App. 08/377,155
Groundwater recovery system
Inventors:
Charles E. Blanchard, John J. Mastroianni
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Jan 24, 1995
Inventors
Charles E. Blanchard
John J. Mastroianni
Assignee (at issue)
International Technology Group
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.