Gas liquefying apparatus, namely, nitrogen and oxygen liquefying apparatus for liquefying nitrogen or oxygen from air separation installations via pressure and relaxation processes; individual component parts for this aforementioned gas liquefying apparatus, namely, cold boxes, pressure control components, expanders and flash vessels and heat exchangers, other than parts of machines

'aforement':29 'air':16 'apparatus':3,9,32 'box':35 'cold':34 'compon':25,38 'control':37 'exchang':45 'expand':39 'flash':41 'gas':1,30 'heat':44 'individu':24 'instal':18 'liquefi':2,8,11,31 'machin':50 'name':4,33 'nitrogen':5,12 'oxygen':7,14 'part':26,48 'pressur':20,36 'process':23 'relax':22 'separ':17 'vessel':42 'via':19

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