Granted Patent
Utility
US 4,524,906 · App. 06/448,691
Temperature control valve and sensor/controller therefor
Inventors:
Richard L. Kenyon, Calvin E. Kempton
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Dec 10, 1982
Inventors
Richard L. Kenyon
Calvin E. Kempton
Assignee (at issue)
Parker-Hannifin Corporation
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.