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Primary view of Improvement in Rotary Engines.
Richardson, John Dun
February 6, 1872
Primary view of Improvements in Expanding Mandrels.
Simons, John
January 23, 1872
Primary view of Improvment in Cultivators.
Forsgard, Gustave A.
September 10, 1872
Primary view of Improvement in Apparatus for the Manufacture of Gas from Oils.
Gearing, Charles & Gearing, Franklin A. G.
June 18, 1872
Primary view of Improvement In Circular-Saw Mills.
Jones, John B.
October 22, 1872
Primary view of Improvement in Blow Offs For Boilers
Husted, Esbon Forrest
September 10, 1872
Primary view of Improvement in Car-Couplings
Jourde, Alfred J.
June 18, 1872
Primary view of Improvement in Railroad-Switches.
Fitzsimmons, Henry
July 16, 1872
Primary view of Improvement in Car-Couplings.
Allen, Henry & Baldwin, Addison H.
September 24, 1872
Primary view of Improvement in railroad switches
Fitzsimmons, Henry
October 22, 1872
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