Mark Identification
AIR-O-SPACE HEATER ISOTHERMICS
Serial Number
73117897
Filing Date
Mar 3, 1977
Registration Date
Mar 7, 1978
Trademark by
Classification Information
HEATING, VENTILATION AND AIR-CONDITIONING APPARATUS INVOLVING THE USE OF HEAT PIPES-NAMELY, AIR-TO-AIR HEAT EXCHANGERS FOR RECOVERY OF EXCESS THERMAL VALUES FROM HOT AIR EXHAUST DUCTS
Environmental Control Apparatus