Granted Patent
Utility
US 4,434,112 · App. 06/437,409
Heat transfer surface with increased liquid to air evaporative heat exchange
Inventor:
John J. Pollock
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Oct 28, 1982
Inventor
John J. Pollock
Assignee (at issue)
Frick Company
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.