Gyrometers; Spyglasses; Electric light switches; Electron tubes; Electronic semi-conductors; Erasing magnets; High frequency switches; Pince-nez cords; Public telephones; Sound amplifiers; Television apparatus for projection purposes; TV monitors; Voltage stabilizing power supply; Welding masks

'amplifi':24 'apparatus':26 'conductor':11 'cord':20 'electr':3 'electron':6,8 'eras':12 'frequenc':15 'gyromet':1 'high':14 'light':4 'magnet':13 'mask':37 'monitor':31 'nez':19 'pinc':18 'pince-nez':17 'power':34 'project':28 'public':21 'purpos':29 'semi':10 'semi-conductor':9 'sound':23 'spyglass':2 'stabil':33 'suppli':35 'switch':5,16 'telephon':22 'televis':25 'tube':7 'tv':30 'voltag':32 'weld':36

GPVMTZ

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Goods & Services