Granted Patent
Utility
US 4,534,952 · App. 06/583,438
Small scale generation of chlorine dioxide for water treatment
Inventors:
W. Howard Rapson, Maurice C. J. Fredette
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: Feb 24, 1984
Inventors
W. Howard Rapson
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.