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Thumbnail for Abridgments of specifications relating to electricity and magnetism. Division III. Transmitting and receiving signals, controlling mechanical action and exhibiting electric effects. : Part II.-A.D. 1867-1876

Abridgments of specifications relating to electricity and magnetism. Division III. Transmitting and receiving signals, controlling mechanical action and exhibiting electric effects. : Part II.-A.D. 1867-1876

Great Britain. Commissioners of Patents1883
Books, Manuscripts
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