Granted Patent
Utility
US 4,364,752 · App. 06/243,487
Electrostatic precipitator apparatus having an improved ion generating means
Inventors:
Richard A. Fitch, Joseph T. Roe
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Mar 13, 1981
Inventors
Richard A. Fitch
Joseph T. Roe
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.