US Patent: 110,460
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| Gage for Turning Clock Work
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Patentees:
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| Harry F. Henderson (exact or similar names) - Bristol, Hartford County, CT |
| James E. Ladd (exact or similar names) - Bristol, Hartford County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Dec. 27, 1870 |
| Antedated: |
Dec. 24, 1870 |
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Joel Havens
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