US Patent: 980,975
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| Relieving Attachment for Lathes
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Patentees:
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| Richard K. Le Blond (exact or similar names) - Cincinnati, Hamilton County, OH |
| William F. Groene (exact or similar names) - Cincinnati, Hamilton County, OH |
| USPTO Classifications: |
| 82/19 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 28, 1910 |
| Granted: |
Jan. 10, 1911 |
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Joel Havens "Vintage Machinery" entry for R. K. Leblond Machine Tool Co.
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