US Patent: 2,226,431
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| Lubricating Mechanism for Machine Tools
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Patentees:
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| Fred A. Hassman (exact or similar names) - Cincinnati, Hamilton County, OH |
| Edgar D. Vancil (exact or similar names) - Cincinnati, Hamilton County, OH |
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Patent Dates:
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| Applied: |
Oct. 12, 1939 |
| Granted: |
Dec. 24, 1940 |
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Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.
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Description: |
| This patent number was seen on a Cincinnati Milling Machine Co. patent plate. |
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