| US Patent: 31,075 
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| Machine For Grinding Heads of Wrenches or Other Articles | 
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| Patentees: |  
 | Loring Coes (exact or similar names) - Worcester, MA |  | Aury Gates Coes (exact or similar names) - Worcester, MA |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Jan. 08, 1861 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | L. & A.G. Coes Pat. Jan. 8, 1861 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The patent describes holders aand connecting levers as components of machines to grind the heads of wrenches such as the Coes Screw Wrench. |  |