Granted Patent
Utility
US 6,003,551 · App. 08/676,774
Bidirectional fluid control valve
Inventor:
William E. Wears
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Jul 8, 1996
Inventor
William E. Wears
Assignee (at issue)
Fisher Controls International LLC
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.