UNT Libraries Government Documents Department - 7 Matching Results

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Primary view of Improvement in Adding-Machines.
Butt, Dennis, L. R.
December 7, 1875
Primary view of Improvement in Gang-Plows.
McCormick, John R.
December 21, 1875
Primary view of Improvement in Locomotive Earth-Excavators.
Hawley, Abel
December 28, 1875
Primary view of Improvement in Rotary Dredgers.
Hawley, Abel
December 21, 1875
Primary view of Improvement in Rotary Spade-Cultivators
Brodnax, David W., Sr.
December 7, 1875
Primary view of Improvement in Sewing-Machine Thread-Guards.
Roosevelt, Lillian
December 21, 1875
Primary view of Improvement in Ventilators.
Moyer, Alexander L.
December 21, 1875
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