| US Patent: 132,819 
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| Improvement in Pipe-Wrenches | 
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| Patentee: |  |
 | Daniel E. Eaton (exact or similar names) - Boston, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Nov. 05, 1872 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Daniel E. Eaton Pat. Nov. 5, 1872 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The hooked jaw has a wedge-shaped bearing surface that catches one of several notches in the main shank.  The bearing surface on the end of the main shank is enlarged to prevent the hook jaw sliding off. |  |