Granted Patent
Utility
US 4,385,910 · App. 06/334,009
Apparatus and method for producing a gas having a controlled water vapor content
Inventors:
Melvin L. Eilers, Michael S. Englund
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Dec 23, 1981
Inventors
Melvin L. Eilers
Michael S. Englund
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.