Patents for Inventions

Patents for Inventions

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The Figure is a plan of the apparatus, in which a is a double bank of keys marked with letters and figures, or signs, the ... the letters and figures or signs arranged alternately, and being capable of being shifted so as to print one or the other. ... with contact making levers /. the free ends of which make contact with metal plates e1 let into the insulating disc d. p is a ... The chief features of the arrangement consist in the use of a aquot;twin transformer, aquot; shown separately and diagram statically.

Title:Patents for Inventions
Publisher: - 1899


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