US Patent: 445,697
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| Gripping Device for Lathes
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Patentees:
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| William L. Grout (exact or similar names) - Orange, Franklin County, MA |
| Edward L. Bowers (exact or similar names) - Orange, Franklin County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 24, 1890 |
| Granted: |
Feb. 03, 1891 |
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Joel Havens
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