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| Patents for John D. Griswold | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 17,479 | Jun. 09, 1857 | G. Benjamin | Devices for holding bit in brace | |
 | 181,310 | Aug. 22, 1876 | J.W. Calkins | Improvement in machines for sawing laths | |