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Title: Alexander Graham Bell, Telephone Patent, 1876
Caption: Alexander Graham Bell's Telephone Patent Drawing and Oath, 03/07/1876
Category: SCIENCE • Historical & Fine Arts
Credit: Album / Science Source / National Archives and Records Administration
Image size: 2269 × 3150 px | 20.4 MB
Print size: 19.2 × 26.7 cm | 893.3 × 1240.2 in (300 dpi)