ENGINEERING INVENTION. - MECHANICAL INVENTION. W MISCELLANEOUS INVENTIONS NEW BOOKS AND PUBLICATIONS. a3usinesni anb 'Wersoncti. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted August 3 1886 AND EACH BEARING THAT DATE., scientific american, 1886-08-21


ENGINEERING INVENTION. - MECHANICAL INVENTION. W MISCELLANEOUS INVENTIONS NEW BOOKS AND PUBLICATIONS. a3usinesni anb 'Wersoncti. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted August 3 1886 AND EACH BEARING THAT DATE., scientific american, 1886-08-21


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