Granted Patent
Utility
US 4,905,721 · App. 07/350,374
Monitoring and controlling AVT (all volatile treatment) and other treatment programs for high pressure boilers via the conductivity control method
Inventor:
John A. Muccitelli
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: May 11, 1989
Inventor
John A. Muccitelli
Assignee (at issue)
Betz Laboratories, Inc.
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.