. 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 ... . ?cowy^ a^ TRACTION ENGINES 341 (fio aiode ^o. 334,978. 2 Sheets—Sheet 2, E. PENNEY. TSAOTION ENSINE. Patented , No. 335,497.

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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddigestofunitedst00alle