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Scientific American, Vol. 89, No. 20 (November 1903) (1903)

leaf 14

An illustration from Scientific American, Vol. 89, No. 20 (November 1903), 1903, leaf 14
Front View of the Dupligraph. Inking the Signature Stamp. Taking an Impression of a Signature. TEE DUPLIGRAPH.—A DEVICE FOB PRINTING FAC-SIMILE LETTERS, INSERTING NAMES, ADDRESS AND A SIGNATURE. © 1903 SCIENTIFIC AMERICAN, INC 35° Scientific American November 14, 1903. SCIENTIFIC AMERICAN…

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