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Scientific American 1902-10-11
573/1099
General view of the Faller automatic telephone exchange. Rotary contact maker. Shuttles, showing several lifted into talking position. The "busy-wheel".
Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Friday 13 February 2009
- Posted on
- Friday 13 February 2009
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