Granted Patent
Utility
US 4,574,868 · App. 06/307,969
Flow directing element for heat exchanger
Inventor:
Gene A. Anders
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Oct 2, 1981
Inventor
Gene A. Anders
Assignee (at issue)
Caterpillar Tractor 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.