Granted Patent
Utility
US 5,522,350 · App. 08/447,471
System for dithering solenoids of hydraulically operated valves after engine ignition shut-off
Inventor:
Thomas J. Hollis
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: May 23, 1995
Inventor
Thomas J. Hollis
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.