IC 011. US 013 021 023 031 034. G & S: Waste incineration plants; installations and apparatus for purification of gas, industrial waste gas and smoke gas; parts for the aforementioned goods; regulating valves for waste incineration plants and for installations and apparatus for purification of gas, industrial waste gas and smoke gas
IC 037. US 100 103 106. G & S: Installation, maintenance and repair of waste incineration plants and of installations and apparatus for the treatment of gas, industrial waste gas and smoke gas
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