. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . 3 Sheets — Sheet 2. T. A. Writing-Machine> No. 133,841. Patented Dec, 10, N. PETERS, Photo-Lithographer. Wanhington, D. C.

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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone