Granted Patent
Utility
US 4,534,375 · App. 06/645,191
Proportional solenoid valve
Inventor:
Clarence D. Fox
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Aug 29, 1984
Inventor
Clarence D. Fox
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.