US Patent: 921,581 
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| Pipe Wrench
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	        Patentee:
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 | Onesimus W. Blake (exact or similar names) - Denver, CO |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Aug. 08, 1908 | 
 
| Granted: | 
May 11, 1909 | 
 
 
 
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		  Patent Pictures:
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Onesimus W. Blake patent May 11, 1909  |  
 
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                        Stan Schulz 
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        Description: |  
| The major element of the patent is a sliding adjustment lock for the quick-adjusting wrench in patent no. 917,908.  This adjustment lock feature has not been seen in known examples of the DENVER WRENCH. |  
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