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Patents for Pitts Agricultural Works
Patents 1 - 10 of 20
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PictureNumberDatePatenteeTitle
19,769Mar. 30, 1858J. GrantHorse Power
21,495Sep. 14, 1858G. HelyHorse Power
22,950Feb. 15, 1859G. HelyHorse Power
35,062Apr. 22, 1862S. PerryTread horse-power
35,063Apr. 22, 1862S. PerryImprovement in circuit horse-powers
39,324Jul. 21, 1863S. PerryImprovement in horse-powers
39,325Jul. 21, 1863S. PerryImprovement in horse-powers
69,243Sep. 24, 1867S. PerryImprovement in chain-wheels for chain horse-power
122,488Jan. 02, 1872S. PerryImprovement in horse-power jacks
  210,747Dec. 10, 1878L. BronsonThrashing Machine
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