ELECTRICAL APPARATUS-NAMELY, AUDIO AND RADIO-FREQUENCY GENERATORS, OSCILLATORS, DETECTORS, AMPLIFIERS, CATHODE-RAY LIGHT PICK-UP AND DISPLAY APPARATUS INCLUDING SCANNING AND RELATED CIRCUITS, PRE-AMPLIFIER BOOSTERS, CONVERTERS, MIXER SEPARATORS, AND WEATHERPROOF AND RADIATION-PROOF HOUSINGS FOR THE SAME; POWER-SUPPLY SYSTEMS; ELECTRICAL CONNECTORS, PLUGS, CABLES, TRANSMISSION LINES, LINE AND CABLE COUPLERS, OUTLETS, TAP-OFF CONNECTORS, MOUNTING PLATES,CONTROL BOXES, ISOLATION AND OUTLET NETWORKS, LINE SPLITTERS, IMPEDANCEMATCHING DEVICES, FILTERS, ATTENUATORS, ATTENUATION EQUALIZERS, DUPLEXERS, DIRECTIONAL COUPLERS, WAVE TRAPS, FILTERS, RELAYS, AND CABLE STRIPPERS

'amplifi':13,31 'apparatus':3,23 'apparatus-nam':2 'attenu':78,79 'audio':5 'booster':32 'box':68 'cabl':53,58,89 'cathod':15 'cathode-ray':14 'circuit':28 'connector':51,64 'control':67 'convert':33 'coupler':59,83 'detector':12 'devic':76 'direct':82 'display':22 'duplex':81 'electr':1,50 'equal':80 'filter':77,86 'frequenc':9 'generat':10 'hous':42 'impedancematch':75 'includ':24 'isol':69 'light':17 'line':55,56,73 'mixer':34 'mount':65 'name':4 'network':72 'oscil':11 'outlet':60,71 'pick':19 'pick-up':18 'plate':66 'plug':52 'power':47 'power-suppli':46 'pre':30 'pre-amplifi':29 'proof':41 'radiat':40 'radiation-proof':39 'radio':8 'radio-frequ':7 'ray':16 'relat':27 'relay':87 'scan':25 'separ':35 'splitter':74 'stripper':90 'suppli':48 'system':49 'tap':62 'tap-off':61 'transmiss':54 'trap':85 'wave':84 'weatherproof':37

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