Granted Patent
Utility
US 4,256,466 · App. 06/057,625
Process for off-gas recovery
Inventor:
Frank C. Braemer
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Jul 16, 1979
Inventor
Frank C. Braemer
Assignee (at issue)
Envirotech, 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.