US Patent: 299,433
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| Machinery for Grinding or Sharpening Drills
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Patentees:
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| W. Ford Smith (exact or similar names) - Salford, Lancashire County, England |
| Arthur Coventry (exact or similar names) - Salford, Lancashire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 05, 1881 |
| Granted: |
May 27, 1884 |
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Joel Havens
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Description: |
| Patented in England, 18 Jul., 1879, #2,921; in France, 05 Nov., 1879, #133,534 and in Belgium, 08 Nov., 1879, #49,784. |
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