. 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 ... . S. f3. 2n-t-^ 430 TRACTION ENGINES. No. 608,517. S. B. GRAVTRACTION EHGirtE. .AMUcalloa Btad lib. S. ie»T ) PAtentod Aug. ;, 1898. No. S. B, BRAY. TRACTION ENGINE. iAvpIl:>tloB Blrect

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Keywords: ., bo, bookcentury1900, bookdecade1900, bookiddigestofunitedst00alle