73205344
Feb 27, 1979
Feb 15, 1983
SELAS HEAT TECHNOLOGY COMPANY LLC
Active Trademark
Fuel Gas Stabilization Systems for Use with Industrial Boilers and Process Heaters, Principally Comprising a Raw Gas Flame Detector Unit and a Blender Valve for Automatically Adjusting a Fuel Gas Mixture to a Constant BTU Output
Electrical and Scientific Apparatus