Granted Patent
Utility
US 4,272,462 · App. 06/185,860
Liquid wetted gas cooled heat exchanger
Inventor:
Alan G. Butt
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Sep 11, 1980
Inventor
Alan G. Butt
Assignee (at issue)
The Trane 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.