1–9 von 9 Ergebnissen
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    Electric trolley wagons and omnibuses

    Perkins, Frank C. | Engineering Index Backfile | 1903

    Combination gasoline traction engine with ditcher wheel attachment

    Perkins, Frank C. | Engineering Index Backfile | 1910

    The Rhodesia railways in South Africa

    Perkins, Frank C. | Engineering Index Backfile | 1906

    Hoisting boats electrically

    Perkins, Frank C. | Engineering Index Backfile | 1910

    Mechanical aids to railroad building

    Perkins, Frank C. | Engineering Index Backfile | 1909

    Short-distance transportation

    Perkins, Frank C. | Engineering Index Backfile | 1908

    A mountain electric railway

    Perkins, Frank C. | Engineering Index Backfile | 1908

    English and German tank locomotives

    Perkins, Frank C. | Engineering Index Backfile | 1903