McCORMICK REAPER, 1834. Excerpts from the patent issued by the U.S. Patent Office on 21 June 1834 for Cyrus McCormick's horse-drawn reaper, including a drawing of the invention at left, and McCormick's description of its operation at right.
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TOP16169164
Source:
達志影像
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RM
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須由TPG 完整授權
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