US Patent: 2,170,503
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| Milling Machine
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Patentees:
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| Mario E. Martellotti (exact or similar names) - Cincinnati, Hamilton County, OH |
| Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH |
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Patent Dates:
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| Applied: |
Nov. 22, 1937 |
| Granted: |
Aug. 22, 1939 |
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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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