Granted Patent
Utility
US 4,236,669 · App. 05/970,847
Thermostatic expansion valve with lead-lag compensation
Inventor:
Kenneth J. Kountz
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Dec 18, 1978
Inventor
Kenneth J. Kountz
Assignee (at issue)
BorgWarner 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.