Learn t ELECTRICAL ENGINEERING TAUGHT BY MAIL. an Bliss Electrical School ARMSTRONG'S PIPE THREADING AUTOMATIC REDUCING VALVE. Specialty: Acetylene Generators ARE PERFECT. Over 10000 Machines Sold. FOR SALE. Patents for an Apparatus to Limit the Escape of a Quantity of Liquid Carbonic Acid Gas . . . . CHAS. E. WILD Metallic Packings FOR}3ES PATENT DIE S.TOCK PERFORATED METALS Granulated and Pameacha Raw Bone ELEVATING - CONVEYING I ELECTRIC MINE LOCOMOTIVES MODELS ELECTRIC FOUNTAINS, scientific american, 1901-08-03
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