Granted Patent
Utility
US 4,621,788 · App. 06/763,369
Solenoid valve
Inventors:
Charles A. DeLew, Edwin A. Ostrowski
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Aug 7, 1985
Inventors
Charles A. DeLew
Edwin A. Ostrowski
Assignee (at issue)
Controls Corporation of America
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.