Granted Patent
Utility
US 4,598,063 · App. 06/763,975
Spiral catalyst support and method of making it
Inventor:
William B. Retallick
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Aug 9, 1985
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.