Annual report of the Commissioner of Patents for the year .. (1866)
United States. Patent Office · Washington : G.P.O · leaf 279
269 COMMISSIONER OF PATENTS * ...? - ™~ 4T' HIHHIUJL., rl IMMr 53910— J. Watrous, Jr.— Cotton Gin. 53914— J. Woolf— Transmitting Power. I\ 53913— E. P. Whitcomb— Churn. 53915— H. I. Behrens— Rotary Engine.
United States. Patent Office · Patents
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