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How to obtain a patent and what to invent (1915)

Waters, John Louis, & company, Washington, D.C. [from old catalog] · Washington, D.C., J. L. Waters & co. · leaf 25

An illustration from How to obtain a patent and what to invent, 1915, leaf 25
r or gasolinesupply tank and cylinders. 58. In order to cheapen the manufacture of acetylene gas, some meanswill have to be discovered for economically producing magnesium carbideto compete with calcium carbide now commonly used, and from which lessgas can be produced than from a corresponding… … UNITED STATES PATENT OFFICE MEMPHIS ARTIFICIAL LIMB MANUFACTURING CO. MANUFACTURBRS OF LIMBS AND BRACES FOR ALL DEFORMrxlES WOOD OR LEATHER SOCKETS. RUBBER. WOOD OR FEUT FEET ALSO A FULL LINE OF STUMP STOCKINGS, SUSPENDERS ARCH SUPPORTERS AND ELASTIC STOCKINGS 151 Madison. AVENUE CuMB. PHONE Maim…

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