Granted Patent
Utility
US 4,524,907 · App. 06/635,540
Automotive thermostatic fluid control valve device
Inventor:
Backman Wong
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Jul 30, 1984
Inventor
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.