Granted Patent
Utility
US 5,199,462 · App. 07/854,880
Valve having rocker valve member and isolation diaphragm
Inventor:
Joseph Baker
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Mar 18, 1992
Inventor
Joseph Baker
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.