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

leaf 23

An illustration from Scientific American, Vol. 89, No. 20 (November 1903), 1903, leaf 23
50 Years Experience … Trade Marks,Designs,Copyrights, Etc. Anyone sendinp a sketch and description mayquickly ascertain our opinion free whether aninvention is probably patentable. Communications strictly confidential. Handbook on Patentssent free. Oldest aeency for securing patents. Patents taken through Munn A Co.…

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