Inventions Patented In England by Americans. REJECTED CASES. CAVEATS REISSUES. DESIGNS TRADE MARKS AND COMPOSITIONS PATENTS CAN BE EXTENDED. FOREIGN PATENTS., scientific american, 1870-05-14


Inventions Patented In England by Americans. REJECTED CASES. CAVEATS REISSUES. DESIGNS TRADE MARKS AND COMPOSITIONS PATENTS CAN BE EXTENDED. FOREIGN PATENTS., scientific american, 1870-05-14


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