04308991 is referenced by 155 patents and cites 7 patents.

A space thermostat for controlling temperature at different levels during different time periods includes a programmable microprocessor which has been pre-programmed to provide a plurality of chronologically annunciated displays. Each display contains a time and temperature within a specific time range. A multi-segment keyboard is provided to enable the homeowner to set the correct clock time and day of the week, to recall each display, and to change, if necessary, the time and temperature of each display so as to establish a desired seven-day time-temperature schedule.

Title
Programmable electronic thermostat
Application Number
6/166748
Publication Number
4308991
Application Date
July 7, 1980
Publication Date
January 5, 1982
Inventor
Dennis M Rippelmeyer
Waterloo
IL, US
Donald L Peinetti
San Diego
CA, US
Agent
Paul A Becker Sr
Assignee
Emerson Electric Co
MO, US
IPC
G05D 23/00
F23N 5/20
View Original Source