Granted Patent
Utility
US 5,873,519 · App. 08/914,454
Electronic thermostat with multiple program options
Inventor:
Robert C. Beilfuss
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Aug 19, 1997
Inventor
Robert C. Beilfuss
Assignee (at issue)
HEATCRAFT, 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.