Granted Patent
Utility
US 4,969,416 · App. 07/488,393
Gas treatment apparatus and method
Inventors:
Norman E. Schumaker, Richard A. Stall, Craig R. Nelson, Wilfried Wagner
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Feb 27, 1990
Inventors
Norman E. Schumaker
Richard A. Stall
Craig R. Nelson
Wilfried Wagner
Assignee (at issue)
EMCORE 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.