Granted Patent
Utility
US 6,149,124 · App. 09/304,151
Pilot solenoid control valve with pressure responsive diaphragm
Inventor:
Xiaolong Yang
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: May 3, 1999
Inventor
Xiaolong Yang
Assignee (at issue)
HUSCO International, 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.