Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 312
ADDEDDISTRIBUTOR … PIECES tt GAS PIPE li LONG TO MOUNTSPEED RHEOSTAT FURNISH 4--jf; PLAT HEADIRON STOVE BOLT 6LONG.WITH WASHERS AND NUTS. Fig. 21 Page 28 Section 7 Multiplex System 263-C
Telegraph
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