Granted Patent
Utility
US 6,644,098 · App. 09/838,169
Heated electrode refrigerant detector utilizing one or more control loop
Inventors:
Dennis Cardinale, Robert Zubik
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Apr 19, 2001
Inventors
Dennis Cardinale
Robert Zubik
Assignee (at issue)
Advanced Test Products, 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.