Granted Patent
Utility
US 4,357,212 · App. 06/220,883
Energy efficient apparatus for vaporizing a liquid and condensing the vapors thereof
Inventors:
Harry F. Osterman, George C. Nylen
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: Dec 29, 1980
Inventors
Harry F. Osterman
George C. Nylen
Assignee (at issue)
Allied Chemical Corporation
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.