Granted Patent
Utility
US 5,260,663 · App. 07/913,022
Methods and circuits for measuring the conductivity of solutions
Inventor:
Frederick K. Blades
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Jul 14, 1992
Inventor
Frederick K. Blades
Assignee (at issue)
Anatel Corporation
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.