Granted Patent
Utility
US 6,741,915 · App. 09/935,281
Usage monitoring HVAC control system
Inventor:
Robert J. Poth
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Aug 22, 2001
Inventor
Robert J. Poth
Assignee (at issue)
MMI Controls, LTD.
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.