Granted Patent
Utility
US 4,470,429 · App. 06/375,387
Three-way valve
Inventor:
Bruce Johnson
Patented Case
View Patent ↗
Granted: Sep 11, 1984
Filed: May 6, 1982
Inventor
Bruce Johnson
Assignee (at issue)
Jandy Industries 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.