25 316 ceipt of original papers and contributions upon the following subjects : (OFFICIAL. Index of Inventions FOR WHICH Letters Patent of the United States October 14 1873 APPLICATIONS FOR EXTENSIONS. EXTENSIONS GRANTED. DESIGNS PATENTED. TRADE MARKS REGISTERED. 810 SCHEDULE OF PATENT FEES:, scientific american, 1873-11-15
25 316 ceipt of original papers and contributions upon the following subjects : (OFFICIAL. Index of Inventions FOR WHICH Letters Patent of the United States October 14 1873 APPLICATIONS FOR EXTENSIONS. EXTENSIONS GRANTED. DESIGNS PATENTED. TRADE MARKS REGISTERED. 810 SCHEDULE OF PATENT FEES:, scientific american, 1873-11-15
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