Granted Patent
Utility
US 4,280,655 · App. 06/152,381
Automotive thermostatic valve
Inventors:
Wayne R. Duprez, Backman Wong
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: May 22, 1980
Inventors
Wayne R. Duprez
Backman Wong
Assignee (at issue)
Standard-Thomson 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.