Granted Patent
Utility
US 4,922,965 · App. 07/313,948
Pneumatic solenoid valve
Inventor:
Jack B. Meister
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Feb 22, 1989
Inventor
Jack B. Meister
Assignee (at issue)
Beta Mfg. Co.
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.