[Class : 9] Measuring, Regulating And Control Apparatus And Instruments For Gases, And Checking (Supervision) Apparatus For Gas Atmospheres; Sequence Control Devices For Melting Processes.[Class : 11] Gas Supply Installations For Industrial Burners; Heating Apparatus; Regulating And Safety Accessories For Gas Apparatus, In Particular For Gas Apparatus Being Parts Of Chemical Installations And Reactors, And Gas Mixing And Distribution Components Therefor.[Class : 42] Engineering Consultancy, Planning, Development And Testing Services In Connection With Heating, Retaining The Heat, And Melting Of Materials, In Particular With Regard To The Melting And Heat Treatment Of Metals And Glass.