Granted Patent
Utility
US 4,402,871 · App. 06/367,473
Metal catalyst support having honeycomb structure and method of making same
Inventor:
William B. Retallick
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Apr 12, 1982
Inventor
William B. Retallick
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.