Granted Patent
Utility
US 4,253,604 · App. 06/043,346
Pneumatic control means for a vehicle heat exchanger system or the like
Inventor:
Douglas Scott
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: May 29, 1979
Inventor
Douglas Scott
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.