US Patent: 579,037
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| Centering Machine
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Patentees:
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| Charles O. Bulock (exact or similar names) - York Haven, York County, PA |
| Alexander E. McLauchlin (exact or similar names) - York Haven, York County, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 28, 1896 |
| Granted: |
Mar. 16, 1897 |
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Joel Havens
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