Granted Patent
Utility
US 4,559,441 · App. 06/579,769
Method of controlling a space heating system
Inventors:
George Rudich, Jr., David L. Troup
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Feb 13, 1984
Inventors
George Rudich, Jr.
David L. Troup
Assignee (at issue)
Johnson Service Company
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.