Granted Patent
Utility
US 4,304,550 · App. 06/176,664
Apparatus for handling and utilizing system gas in a pyro-processing system
Inventor:
Glenn A. Heian
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Aug 11, 1980
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.