Granted Patent
Utility
US 4,766,921 · App. 06/920,303
Method of operating a PWM solenoid valve
Inventor:
Leonard J. Williams
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Oct 17, 1986
Inventor
Leonard J. Williams
Assignee (at issue)
Moog 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.