COMMUNICATIONS RECEIVED. INDEX OF INVENTIONS April 20 1875 AND EACH BEARING THAT DATE. TRADE MARKS REGISTERED. SCHEDULE OF PATENT FEES. 820 820 830 810 810 815 830 CANADIAN PATENTS. Back Page a line. Inside Page 75 cents a line. FOR SALE Model Engines., scientific american, 1875-05-22
COMMUNICATIONS RECEIVED. INDEX OF INVENTIONS April 20 1875 AND EACH BEARING THAT DATE. TRADE MARKS REGISTERED. SCHEDULE OF PATENT FEES. 820 820 830 810 810 815 830 CANADIAN PATENTS. Back Page a line. Inside Page 75 cents a line. FOR SALE Model Engines., scientific american, 1875-05-22
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