73384244
Sep 8, 1982
A HEAT-TIME ELECTRONIC METER OR TOTALIZER IN CONJECTION A HEAT SENSOR FOR USE WITH HOT WATER, HOT AIR AND CHILLED WATER SYSTEMS A HEATER-TIME ELECTRONIC METER OR TOTALIZER IN CONJUNCTION A HEAT SENS OR FOR USE WITH HOT WATER, HOT AIR AND CHILLED WATER SYSTEMS
Electrical and Scientific Apparatus