Granted Patent
Utility
US 4,236,887 · App. 06/041,240
Method and apparatus for handling and utilizing system off-gas in a pyro-processing system
Inventor:
Glenn A. Heian
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: May 21, 1979
Inventor
Glenn A. Heian
Assignee (at issue)
Allis-Chalmers 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.