Vacuum measuring and testing apparatus, namely, vacuum gauges and structural parts therefor; electric and electronic apparatus and devices for process control, namely, pressure controllers for controlling the pressure of liquid, semi-liquid, and gaseous substances in industrial processes; leak detection apparatus for identifying leaks in air-tight containers, chambers and vessels; residual gas analyzers; gas flow controllers

'air':48 'air-tight':47 'analyz':56 'apparatus':5,16,42 'chamber':51 'contain':50 'control':21,24,26,59 'detect':41 'devic':18 'electr':13 'electron':15 'flow':58 'gas':55,57 'gaseous':35 'gaug':8 'identifi':44 'industri':38 'leak':40,45 'liquid':30,33 'measur':2 'name':6,22 'part':11 'pressur':23,28 'process':20,39 'residu':54 'semi':32 'semi-liquid':31 'structur':10 'substanc':36 'test':4 'therefor':12 'tight':49 'vacuum':1,7 'vessel':53

[ Gas regulators; regulating accessories for gas apparatus; regulating accessories for gas pipes and lines ]

'accessori':4,9 'apparatus':7 'gas':1,6,11 'line':14 'pipe':12 'regul':2,3,8

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