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Scientific American, Vol. 69, No. 10 (September 1893) (1893)
leaf 14
the angles of a triangle, surf ace of the sphere, Agents wanted to sell tbe Im- DEL.ANRY'8 with 6 illustrations. Contained in SCTENnyic Ameri- proved Hall Typewriter. Metallic Gaskets and Columbian Desk Catalogue loo- can Supplement, No. S75. Prioe 10 oents. To be The only standard machine made… … charge. Oldest bureau for securing Patents In for 60 days only. Address Watertown Steam Engine Co. America. Over 100,000 applications have been THE NATIONAL M'fC filed by Mess & Co., 361 Broadway, N. T. & IMPORTING CO., 83i fiurbora St., Chicago, SL WATERTOWN. N. Y. © 1893 SCIENTIFIC AMERICAN, INCPatents · Cable · Feet · Munn · Scientific American · Columbian · Express money · Electric motor · Eye piece · Search light · Carbonic acid · Early men · Patent office · Storage battery · Electric light
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