US Number-Issued Patents (1836-1861, 1866-1920)
About the Collection
Collection preserves US number-issued patents (1836-1861, 1866-1920).
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Improvement in cotton-cultivators
D. S. French and Hinman, Joseph, King, Nathan
1860-07-10
US 0029127 A
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Improvement in devices for converting reciprocating into rotary motion
Joshua Hathaway
1860-04-03
US 0027715 A
