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The design and test of a new type of telephone repeating coil (1915)

Turner, Hubert Michael · leaf 34

An illustration from The design and test of a new type of telephone repeating coil, 1915, leaf 34
Pig, 6 … LUrfOIS 14

Telephone · Electric coils · Theses

Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.

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