US Patent: 441,939
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| Shaper Attachment for Lathes
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Patentees:
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| Stephan M. Cook (exact or similar names) - Mansfield, Bristol County, MA |
| John E. Sherman (exact or similar names) - Attleborough, Bristol County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 13, 1890 |
| Granted: |
Dec. 02, 1890 |
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Joel Havens
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