Patent for Daniel Halladay's Improvement in Windmills

7/5/1870

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This primary source comes from the Records of the Patent and Trademark Office.

National Archives Identifier: 4688450

Full Citation: Patent for Daniel Halladay's Improvement in Windmills; 7/5/1870; Records of the Patent and Trademark Office, Record Group 241. [Online Version, https://www.docsteach.org/documents/document/patent-for-daniel-halladays-improvement-in-windmills, October 9, 2024]

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