Index of Inventions For which Letters Patent of the United States were granted addressing PIENS & C Patent Solicitors. 37 Park Row Sew York. Inventions Patented in England by Americans FOREIGN PATENTEI-A HINT TO PATENTEES. MUNN lc C, scientific american, 1872-03-30

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Index of Inventions For which Letters Patent of the United States were granted addressing PIENS & C Patent Solicitors. 37 Park Row Sew York. Inventions Patented in England by Americans FOREIGN PATENTEI-A HINT TO PATENTEES. MUNN lc C, scientific american, 1872-03-30

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