Semiconductor testing apparatus; surveying instruments; electrical measuring apparatus, namely, electronic devices for measuring electric current; electric transformers; high-frequency apparatus, namely, switches and switching power supplies; lasers for measuring purposes; high-frequency switching power supplies; electric switches; low-voltage power supplies; stabilized voltage power supplies

'apparatus':3,8,21 'current':15 'devic':11 'electr':6,14,16,38 'electron':10 'frequenc':20,34 'high':19,33 'high-frequ':18,32 'instrument':5 'laser':28 'low':41 'low-voltag':40 'measur':7,13,30 'name':9,22 'power':26,36,43,47 'purpos':31 'semiconductor':1 'stabil':45 'suppli':27,37,44,48 'survey':4 'switch':23,25,35,39 'test':2 'transform':17 'voltag':42,46

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