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Scientific American, Vol. 68, No. 13 (1893) (1893)

leaf 15

An illustration from Scientific American, Vol. 68, No. 13 (1893), 1893, leaf 15
the ical structure of an electric telephone ta a common screw, fibers of the be used to produce the electrical action and, being cold forg- wood. on which the first patent rests. The third ed, the entire surface ment, Fire-Proof Paints, ete. ' claim is for the use in such instruments \ has… … liner, November 17, 1891, for a Combined Wanted 50,000 Sawyers SAWS and Lumbermen to VELOCITY OF 1CE BOATS. A COL- Telegraph and Telephone; and controls lection of interesting letters to the editor of the SC1tEN-~ A erson’s (@~ Book of SA WS, new 1892 edi- Letters Patent No. 474,231,. granted to…

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