74679412
May 23, 1995
Aug 19, 1997
thermostats for use in connection with cooling and heating installations
Electrical and Scientific Apparatusgravity and forced air, gas, oil, and coal furnaces; cooling and heating installations, namely gas fired and oil fired furnaces, split system air conditioners and packaged heat pumps, combination gas heating-electric cooling units, blower coils and thermostats sold as a unit with the above
Environmental Control Apparatus