US Patent: 2,807,973
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| Apparatus for Manufacturing Crankshafts Automatically
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Patentees:
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| Walter R. Meyer, deceased (estate of) (exact or similar names) - Cincinnati, OH |
| Walter H. Meyer, administrator (exact or similar names) - Cincinnati, OH |
| Harold J. Siekmann (exact or similar names) - Cincinnati, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 17, 1955 |
| Granted: |
Oct. 01, 1957 |
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Joel Havens "Vintage Machinery" entry for R. K. Leblond Machine Tool Co.
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