Granted Patent
Utility
US 6,202,672 · App. 09/093,303
Valve assembly
Inventors:
Craig D. Ellis, Kenith W. Chambers, Scott D. McCormick, Steven D. DeRidder, W. Layne Carruth, Stephen R. Schulte
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Jun 9, 1998
Inventors
Craig D. Ellis
Kenith W. Chambers
Scott D. McCormick
Steven D. DeRidder
W. Layne Carruth
Stephen R. Schulte
Assignee (at issue)
HILL-ROM, 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.