Granted Patent
Utility
US 5,161,737 · App. 07/755,657
Temperature control flow valve
Inventors:
Richard W. Olmsted, Stephen Gonyaw
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Sep 6, 1991
Inventors
Richard W. Olmsted
Stephen Gonyaw
Assignee (at issue)
Watts Regulator Co.
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.