US Patent: 68,827
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| Metal Drill
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Patentees:
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| Edward S. Young (exact or similar names) - Worcester, Worcester County, MA |
| Amos Whipple (exact or similar names) - Whitingsville, Worcester County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Sep. 10, 1867 |
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Joel Havens
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