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WE_Machine_Switching_System_London_1920.pdf

WE Machine Switching System - London, 1920 OCR [LARGE FILE]
60MB file!  (Look for 17MB file.)  Western Electric Company, Ltd. Contributed by Jack Ryan.
Keywords: Translation; register; brush; junction group; power drive; SXS-like; line finder; magnetic; power clutch; operator; sender; automatic; subscriber; sequence; transmission; reverse impulse; switch; connection; common battery

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