Granted Patent
Utility
US 4,312,379 · App. 06/152,550
Pressure actuated multiway valve
Inventor:
Mark Kinder
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: May 23, 1980
Inventor
Mark Kinder
Assignee (at issue)
TRW Limited
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.