US Patent: 312,223
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| Lathe Tool
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Patentees:
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| Thomas Ryan (exact or similar names) - Lockport, Niagara County, NY |
| Thomas E. Ryan (exact or similar names) - Lockport, Niagara County, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 14, 1884 |
| Granted: |
Feb. 10, 1885 |
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Joel Havens
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