US Patent: 996,435
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| Valve-grinder
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Patentee:
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| Elvin E. Townsend (exact or similar names) - Oakland, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 04, 1910 |
| Granted: |
Jun. 27, 1911 |
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Jeff Joslin
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Description: |
| This invention provides an oscillating mechanism for the valve grinder of patent 959,653. |
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