Granted Patent
Utility
US 6,469,526 · App. 09/547,555
System for detecting conductive contaminants and method of use
Inventor:
Marshall R. Franklin
Patented Case
View Patent ↗
Granted: Oct 22, 2002
Filed: Apr 12, 2000
Inventor
Marshall R. Franklin
Assignee (at issue)
Synagro Technologies, 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.