Granted Patent
Utility
US 5,449,142 · App. 08/354,427
Two-way cartridge valve for aggresive media
Inventor:
Gerard S. Banick
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Dec 12, 1994
Inventor
Gerard S. Banick
Assignee (at issue)
Automatic Switch Company
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.