Granted Patent
Utility
US 5,764,538 · App. 08/566,503
System interface for microwave conductivity sensor
Inventor:
Margaret A. Cheiky-Zelina
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Dec 4, 1995
Inventor
Margaret A. Cheiky-Zelina
Assignee (at issue)
Man-Gill Chemical Company
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.