US Patent: 737,326
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| Ore-concentrator
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Patentees:
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| Calvin A. Bonner (exact or similar names) - Dayton, OH |
| Edward E. Euchenhofer (exact or similar names) - Dayton, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 07, 1902 |
| Granted: |
Aug. 25, 1903 |
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Jeff Joslin
Vintage Machinery entry for E. Euchenhofer, Dayton Machine Works
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Description: |
| Co-inventor Euchenhofer operated Dayton Machine Works, makers of a patented power hacksaw. |
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