Granted Patent
Utility
US 6,805,798 · App. 09/860,659
Environmental remediation method and apparatus
Inventor:
William B. Kerfoot
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: May 18, 2001
Inventor
William B. Kerfoot
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.