Granted Patent
Utility
US 5,813,799 · App. 08/681,007
Combustion process and apparatus for removing volatile contaminants from groundwater or subsurface soil
Inventors:
Hartwell F. Calcote, Charles H. Berman
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Jul 22, 1996
Inventors
Hartwell F. Calcote
Charles H. Berman
Assignee (at issue)
Aerochem Research Laboratories, Inc.
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.