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Scientific American, Vol. 7, No. 3 (July 1862) (1862)

leaf 12

An illustration from Scientific American, Vol. 7, No. 3 (July 1862), 1862, leaf 12
ting substantially as and for the purpose set forth. I also claim the method of forming the tenons on the ends of thecogs, to enter the mortises of the sheet metal links by means of thesimple saw kerfs, substantially as specified. DESIGNS. 1,610.—Garrettson Smith and Henry Brown, of Philadel-phia,… … The new Patent Laws enacted by Congress on the 2dof March, 1861, are now in full force, and prove to be of great benefitto all parties who are concerned in new inventions. The duration of patents granted under the new act is prolonged tosevkhtkew years, and the government fee required on filing an…

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