Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 322
Section 8 Multiplex System 263-C … Page 1 Section 8 Multiplex System 263-C MULTIPLEX TEST AND SCHOOL SETS 1. Test Sets. For convenience in testing transmitters, auto controls, and printers, as well as to provide a convenient worktable for repairing and overhauling all multiplexapparatus, and afford also a place for keeping spare…
Telegraph
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