Granted Patent
Utility
US 4,287,162 · App. 06/058,695
Separation of ammonia from ammonia containing gases
Inventor:
Edward G. Scheibel
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: Jul 18, 1979
Inventor
Edward G. Scheibel
Assignee (at issue)
SUNTEC CO., LTD.
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.