Granted Patent
Utility
US 6,681,791 · App. 10/256,158
Manifold valve position indicator and operator alerting system
Inventors:
Stephen Chorney, Richard Linton Samsal, Stanley Louis Morton, Peter Joseph Kielhofner, Todd Jeffrey Siegfried, Thomas Anderson
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Sep 26, 2002
Inventors
Stephen Chorney
Richard Linton Samsal
Stanley Louis Morton
Peter Joseph Kielhofner
Todd Jeffrey Siegfried
Thomas Anderson
Assignee (at issue)
Air Products and Chemicals, 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.