Granted Patent
Utility
US 5,705,923 · App. 08/338,631
Variable inductance current limiting reactor control system for electrostatic precipitator
Inventors:
David F. Johnston, Michael Mahler, Timothy Gerald Lawrence
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Nov 22, 1994
Inventors
David F. Johnston
Michael Mahler
Timothy Gerald Lawrence
Assignee (at issue)
BHA Group, 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.