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Find number abc

If 5ac8b - bab74 = a0708 find number abc. Multiple solutions may exist.

Correct answers: 0

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Addressograph

In 1896, the first U.S. patent for an addressing machine, the Addressograph (No. 558,936) was issued to J.S. Duncan of Sioux City, Iowa developed from the invention he made in 1892. His earlier model consisted of a hexagonal wood block upon which was glued rubber type torn from rubber stamps. While revolving, the block simultaneously inked the next name and address ready for the next impression. The "Baby O" model was put into production 26 Jul 1893 in a small back room of the old Caxton Building in Chicago, Ill.

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