Granted Patent
Utility
US 4,571,007 · App. 06/608,687
Proportioning relay valve
Inventors:
Richard W. Carmichael, John G. Nosse
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: May 10, 1984
Inventors
Richard W. Carmichael
John G. Nosse
Assignee (at issue)
ALLIED CONSULTING, 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.