U.S. federal trademark · Serial No. 73139060 · Reg. No. 899
CLEANING EQUIPMENT FOR INDUSTRIAL FURNACES COMPRISING MECHANICAL SCRAPERS AND SLEEVES
MONITORING AND CONTROL EQUIPMENT OF COMBUSTION IN INDUSTRIAL FURNACES COMPRISING VIEWING MEANS FOR WATCHING INTENSITY OF COMBUSTION, SENSORS FOR TEMPERATURE, PRESSURE, AMOUNT OF AIR, AND VALVE MEANS FOR VARYING SUPPLY OF FUEL AND AIR
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