US Patent: 3,018,698
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| Machine Tool Auxiliary Spindle Drive
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Patentees:
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| John E. Lynch (exact or similar names) - Cincinnati, Hamilton County, OH |
| James E. Brennan (exact or similar names) - Cincinnati, Hamilton County, OH |
| Richard C. Brasington (exact or similar names) - Cincinnati, Hamilton County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 22, 1959 |
| Granted: |
Jan. 30, 1962 |
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Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.
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