Alexander Graham Bell's Telephone Patent Drawing and Oath

3/7/1876

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

National Archives Identifier: 302052

Full Citation: Alexander Graham Bell's Telephone Patent Drawing and Oath; 3/7/1876; Records of the Patent and Trademark Office, Record Group 241. [Online Version, https://www.docsteach.org/documents/document/alexander-graham-bells-telephone-patent-drawing-and-oath, March 20, 2025]

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