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Specifications for the multiplex printing telegraph system : theory and operation (1920)

Western Union Telegraph Company · [New York?] : The Company · leaf 285

An illustration from Specifications for the multiplex printing telegraph system : theory and operation, 1920, leaf 285 — V V V v v vv v v 9 VV V V V V V v vv Hi Hi i*i Hift i*i i*i f*ift 1*1 r*i i*i/i/i 1*1 ft ftft Aiiii

Telegraph

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