NUMBER 7. VOLUME I. CATALOGUE OF AMERICAN IF PATENTS THE ISSUED IN MAY, 1845. SCIENTIFIC AMERICAN, To Reid R. Trockmorton. of Brooklyn, N. Y., … the only paper in America devoted to the in- To Frederich Walther, of Wincester, Va., for terests of those classes ; but is particularly use- improvement in pumps : patented 1st May, 1845. ful to farmers, as it will not only apprise them To Samuel Taylor Cambridge and Abbot R. Da- screw nut, of…
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