Granted Patent
Utility
US 4,570,847 · App. 06/664,249
Flue damper control system
Inventor:
Michael T. Clouser
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Oct 24, 1984
Inventor
Michael T. Clouser
Assignee (at issue)
Emhart Industries, 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.