Granted Patent
Utility
US 5,901,749 · App. 08/820,769
Three-way poppet valve
Inventor:
Richard R. Watson
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Mar 19, 1997
Inventor
Richard R. Watson
Assignee (at issue)
GILMORE VALVE 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.