Granted Patent
Utility
US 4,881,686 · App. 07/256,987
Temperature recovery display device for an electronic programmable thermostat
Inventor:
Vinay Mehta
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Oct 13, 1988
Inventor
Vinay Mehta
Assignee (at issue)
Hunter-Melnor, 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.