| US Patent: 671,789 
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| Wrench | 
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| Patentee: |  |
 | Charles Borgeson (exact or similar names) - Pittsburgh, PA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jul. 28, 1900 |  
| Granted: | Apr. 09, 1901 |  USPTO (New site tip)
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                        Stan Schulz
 
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| Description: |  | The patent is for the spring-loaded follower within the socket which would tend to push the nut out of the socket.  The drawing shows a square socket; the specifications extend the application to sockets of other shapes. |  |