TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending MAY 22 i000. AND EACH BEARING THAT DATE. WALWORTH MANUFACTURING CO. A NEW AND WONDERFUL INVENTION ERWIN STEAM RAM. PENBERTHY INJECTOR CO. ACETYLENE APPARATUS 101 0 Chestnut St. Phila. Pa. THE BEST BENCH LATHE The Pratt alk. Whitney Co. Hartford. Conn. IT SIMPLIFIES DIFFICULT WORK Threstdingandeuttinginischine THE MERRELL MANI! FAO. RESTFUL SLEEP In Camp on the Yacht and at Home. 'Perfection' Air Mattresses CUSHIONS and PILLOWS. Clean and Odorless will not absorb moisture. Can be
TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending MAY 22 i000. AND EACH BEARING THAT DATE. WALWORTH MANUFACTURING CO. A NEW AND WONDERFUL INVENTION ERWIN STEAM RAM. PENBERTHY INJECTOR CO. ACETYLENE APPARATUS 101 0 Chestnut St. Phila. Pa. THE BEST BENCH LATHE The Pratt alk. Whitney Co. Hartford. Conn. IT SIMPLIFIES DIFFICULT WORK Threstdingandeuttinginischine THE MERRELL MANI! FAO. RESTFUL SLEEP In Camp on the Yacht and at Home. 'Perfection' Air Mattresses CUSHIONS and PILLOWS. Clean and Odorless will not absorb moisture. Can be packed in small space when not in use. ONE AND ONE-QUARTER CENTS PER HOUR one of our $ Battery Fan out tits consisting of 1 Battery Motor 3 Cells Battery 1 Charge for Bat 1 Cabinet 1944xC9(xFh. Will run Manufacturers of all kinds of electrical supplies. Steam Shovels Dredges The VULCAN IRON WORKS COMPANY TOLED OHI U. S. A. FOR FINE ACCURATE WORK SENPC4 FALLS MFG. CO. 695 Water Street Cbe Standard Walwortb's Solid Die Plate PHYSICAL AND SCHOOL APPARATUS TOEPLER HOLTZ SELF CHARGING MACHINE E. S. RITCHIE & SONS Brookline Mass. SEND 10 0 FOR 126 PAGE 8 A W g WILLIAMSIZt IF YOUR DEALISR 00ES 1407' SUPPLY YOU. new Button THE BEST THING YET! 85 Commercial Avenue WATER DYNAMOS 3TRONG BREEZE FROM HOUSEHOLD FAUCET. CAN BE USED ANYWHERE. 'SECCOTINE'EtlfITYITHIINSG NEVER LETS GO SECCOTINE CO. 396 BROADWAY. NEW YORK The New Yankee Drill Grinder Scientifically Correct. 250 Asylum Av Kolainato Mich. NEW FRICTION DISK DRILL Das These Great Advantages:, scientific american, 1900-06-02
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