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Bell's electric speaking telephone: its invention, construction, application, modification, and history
Content Provider | Internet Archive |
---|---|
Author | Prescott, George B. (George Bartlett) |
Organization | University of Michigan |
Language | English |
Publisher | New York, Arno Press |
Publisher Date | 1972-01-01 |
Access Restriction | Open |
Subject Keyword | telephone circuit apparatus instrument vibrations diaphragm magnet current jack knife central office switch board speaking telephone bell telephone spring jack soft iron electro magnet articulate speech permanent magnet Telephone Téléphone |
Content Type | Text |
Resource Type | Book |