Deals with main principles of system and method of assembly, with particular reference to private automatic exchanges suitable for offices, works, ships, railways, etc. (See also - n 2961, Sept. 29 1922 p 406-407, n 2962 Oct. 6 1922, p 422-424)
The relay automatic telephone system
Engineering
Engineering ; 114 , n 2963 ; p 448-451
1922
4 pages
15 Figs
Article (Journal)
English
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