Granted Patent
Utility
US 4,416,581 · App. 06/349,402
Method and apparatus for cooling an expander
Inventor:
Carl H. Geary
Patented Case
View Patent ↗
Granted: Nov 22, 1983
Filed: Feb 16, 1982
Inventor
Carl H. Geary
Assignee (at issue)
Elliott Turbomachinery Co., Inc.
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.