US Patent: 593,066
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| Automatic Lathe
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Patentees:
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| Charles P. Ball (exact or similar names) - Enfield, Hartford County, CT |
| Dwight E. Sweetser (exact or similar names) - Enfield, Hartford County, CT |
| George H. Ball (exact or similar names) - Enfield, Hartford County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 05, 1896 |
| Granted: |
Nov. 02, 1897 |
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Joel Havens
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