INDEX OF INVENTIONS For which Letters Patent of the United States were Uranted JUNE 14 1898 AND EACH BEARING THAT DATE. AT HE '?10vertisserrients. ORDINARY RATES. Inside Page each Insertion. - 75 cents a line Back Page each insertion $ a line Foot power Screw. .cutting Automatic Cross feed 9 and I I-inch Swing. Star Lathes Walwortb's Solid Standard THE THERMOPHONE Measuring Temperatures E. S. RITCHIE & SONS BROOKLINE MASS. WOODWORKING THE ECAN CO. 327 to 347 West Front Street CINCINNATI OHIO. COBURN TROLLEY Parlor Barn and Fire Door Hangers All Styles. Latest
INDEX OF INVENTIONS For which Letters Patent of the United States were Uranted JUNE 14 1898 AND EACH BEARING THAT DATE. AT HE '?10vertisserrients. ORDINARY RATES. Inside Page each Insertion. - 75 cents a line Back Page each insertion $ a line Foot power Screw. .cutting Automatic Cross feed 9 and I I-inch Swing. Star Lathes Walwortb's Solid Standard THE THERMOPHONE Measuring Temperatures E. S. RITCHIE & SONS BROOKLINE MASS. WOODWORKING THE ECAN CO. 327 to 347 West Front Street CINCINNATI OHIO. COBURN TROLLEY Parlor Barn and Fire Door Hangers All Styles. Latest Improvements. Coburn Trolley Track Mfg. Co. Holyoke Mass. BARNES' UPRIGHT DRILLS W. F. & JOHN BARNES CO. 105 Fulton Street New York. Gas Blast Furnaces GAS PRODUCERS PRESSURE BLOWERS. AMERICAN GAS FURNACE CO. NICKEL Electro-Plating THE DEFIANCE MACHINE WORKS LARGEST LINE IN THE WORLD syr ROCK DRILLS AIR COMPRESSORS (RAND DRILL CO.) A Marvelous Machine! and Pipe Mill Machine. PG. CO. 501 Curtiss Street Toled Ohio. If you want the best CHUCKS buy Westcott's Westcott Chuck Co. Oneida N. Y. U. S. A. 200 Beale St. San Francisc Cal. Mining and Marine Machinery Irrigation and Water Works Plants Boilers and Engines. : THIN STEEL :TRY SQUARES QUEEN'S NEW AUTOMATIC LAMP. THE BERKEFELD FILTER BERKEFELD FILTER CO. Watson's Natural Stone Filter. PA. HOLDS HOSE, scientific american, 1898-06-11
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