AN IMPROVED DUMBWAITER. LARSEN'S DUMBWAITER. NEW SOLDERING MACHINE. DECISIONS RELATING TO PATENTS. American Locomotives in the Holy Land. made in the new world. NEW RAILROAD FROG. The Diamond. The Phonograph Forestalled. BAIRD'S IMPROVED RAILROAD FROG. JENSEN'S SOLDERING MACHINE., scientific american, 1890-11-08
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