Report of the Commissioner of Patents, for the year 1849 (1850)
United States. Patent Office, Ewbank, Thomas, 1792-1870, Lincoln, Abraham, 1809-1865. Improved method of lifting vessels over shoals, United States. Congress (31st, 1st session : 1849-1850). Senate · Washington [D.C.] : Office of Printers to the Senate · leaf 640
9 .^ … 625 [15] CONCLUDING REMARKS ON PROPELLERS. From the specimens of natures propellers quoted (and they representcountless millions from every division of the animated kingdom for whichair and water are the theatres) we see that those creatures possessing thepowers of locomotion in the greatest…
United States. Patent Office · Patents · Inventions · Aids to navigation
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