Granted Patent
Utility
US 5,566,923 · App. 08/384,707
Fluid valves
Inventors:
Dan O. Ennis, Robert E. Gooch, Stephen R. Chipman, Jonathan D. Nelson
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Feb 6, 1995
Inventors
Dan O. Ennis
Robert E. Gooch
Stephen R. Chipman
Jonathan D. Nelson
Assignee (at issue)
Valtek, 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.