| US Patent: 16,844 
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| Nut Wrench Screw-Wrench
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| Patentee: |  |
 | Benjamin F. Joslyn (exact or similar names) - Worcester, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Mar. 17, 1857 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | B. F. Joslyn Pat. Mar. 17, 1857 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The sliding jaw operates in a hollow shank, and is adjusted by a thumb-wheeled screw. |  |