. 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 ... . fVttnessea- IRACTION ENGINES 399 No. 502,820. 5 Sheeta—Sheet Z B, JACKSOK. TSAOTION ENaiNE. Patented Aug. 8, 1893. A^^^ (Bo Model.: No. 602,820 6 fiboetfl—Sheet 3. B. JACKSON. TEAOTION ENGINE. Patented Aug. 8, 1803.

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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddigestofunitedst00alle