US Patent: 147,297
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| Improvement in sharpening-machines
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Patentee:
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| Frank White (exact or similar names) - Cincinnati, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 13, 1873 |
| Granted: |
Feb. 10, 1874 |
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Jeff Joslin
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Description: |
| "My invention relates to a device for holding planing-knives, &c., in the process of grinding..." |
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