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Primary view of Improvement in Machines for Building Earth-Works.
Morey, Harvey.
December 2, 1873
Primary view of Post-Hole Auger
Hubby, Mead M.
November 2, 1880
Primary view of Hay-Press Power.
Bryant, Warren S.
January 2, 1906
Primary view of Brace.
Henderson, William H.
September 2, 1890
Primary view of Cattle-Guard.
Steinmann, Herman Werner
April 2, 1901
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