Telephone Instruments

Telephone Instruments

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Their Operation, Arrangement and Management William Hiram Radcliffe. hinges ff. The binding-posts h and g, to which the line wires are connected, are mounted at the top of the box, the hand generator a and hook switch v are mountedanbsp;...

Title:Telephone Instruments
Author:William Hiram Radcliffe
Publisher: - 1913


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