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Official List of Patents- February 26, 1870

Issued by the United States Patent Office. FOR THE WEEK ENDING FEB. 15,1870. Reported Officially for the Scientific American.

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Scientific American Magazine Vol 22 Issue 9This article was originally published with the title “Official List of Patents” in Scientific American Magazine Vol. 22 No. 9 (), p. 147
doi:10.1038/scientificamerican02261870-147