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Scientific American, Vol. 100, No. 11 (March 1909) (1909)

leaf 9

An illustration from Scientific American, Vol. 100, No. 11 (March 1909), 1909, leaf 9
206 Scientific American March 13, 1909. … and $27 used. Another error stamp is the 8-cent on each closure of the magnet circuit bringing the blade The paddle-wheel signal distributor. the 100-milesimas carmine stamp of 1879, with the into the position occupied by the preceding blade. By (Eight blades.) sending short impulses, the operator…

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