Granted Patent
Utility
US 4,393,036 · App. 06/319,971
Production of mixed sulfuric and hydrochloric acid feed and chlorine dioxide generation therewith
Inventor:
Maurice C. J. Fredette
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Nov 10, 1981
Inventor
Maurice C. J. Fredette
Assignee (at issue)
ERCO Industries Limited
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.