73028379
Aug 1, 1974
Jun 22, 1976
CONTROLLING DEVICES FOR CONTROLLING GAS, IN CONFORMITY WITH TEMPERATURE, PRESSURE AND TIME
Electrical and Scientific ApparatusGAS OPERATED INFRA-RED RADIANT SPACE HEATERS FOR RESIDENTIAL, COMMERCIAL, AND INDUSTRIAL USES; DOMESTIC GAS OPERATED OVENS, GRILLS AND COOKING UTENSILS, INDUSTRIAL INFRA-RED RADIANT DRYING DEVICES USED FOR DRYING INDUSTRIAL PRODUCTS
Environmental Control Apparatus