Granted Patent
Utility
US 5,629,660 · App. 08/389,117
Expansion valve for air conditioning system with proportional solenoid
Inventors:
Richard L. Kenyon, Roger G. Riefler, Ashok G. Zopey
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Feb 15, 1995
Inventors
Richard L. Kenyon
Roger G. Riefler
Ashok G. Zopey
Assignee (at issue)
Parker-Hannifin 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.