Granted Patent
Utility
US 4,294,591 · App. 06/148,845
Mounting for high-voltage electrode support frame in an electrostatic precipitator
Inventor:
Melvin R. Kahl
Patented Case
View Patent ↗
Granted: Oct 13, 1981
Filed: May 12, 1980
Inventor
Melvin R. Kahl
Assignee (at issue)
Envirotech, 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.