. Digest of United States automobile patents from 1789 to July 1, 1899, including all patents officially classed as traction-engines for the same period. Chronologically arranged ... together with lists of patents in the classes of portable-engines, traction-wheels, electric locomotivs, and electric railway battery systems ... . N If ^itetlf^jfTCr No. 489,811. ^ „ . „ 3 Sheeta—Sheet 2. B. HOLT. TEAOTIOB EN8INE. Patented Jan. 10, 1893. (No Hodel.) No. 489,811. B. HOLT. TBAOTION ENGINE. 3 StieetB—Sbeet 3. Patented Jan. 10, 1893.

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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddigestofunitedst00alle