Granted Patent
Utility
US 5,478,047 · App. 08/441,669
Flexible seating structure for valves
Inventors:
William Best, Joseph W. Hoff, Stephen J. Smick, James A. Skurka
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: May 15, 1995
Inventors
William Best
Joseph W. Hoff
Stephen J. Smick
James A. Skurka
Assignee (at issue)
Watts Investment 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.