IC 007. US 013 019 021 023 031 034 035. G & S: Gas separating equipment, namely, gas separators and separating machines for chemically processing gas; rare gas extracting instruments, namely, extracting machines for chemical processing gases; valves being parts of machines; pressure valves being parts of machines; machine parts, namely, steam traps; hydraulic pressure valves being parts of machines; condensing installations, namely, mechanical condensators and gas condensers being parts of machines
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