| US Patent: 996,435 
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| Valve-grinder | 
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| Patentee: |  |
 | Elvin E. Townsend (exact or similar names) - Oakland, CA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Oct. 04, 1910 |  
| Granted: | Jun. 27, 1911 |  USPTO (New site tip)
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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. |  |