| US Patent: 580,685 
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| Pipe Wrench | 
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| Patentee: |  |
 | Osborn B. Hall (exact or similar names) - Malden, MA |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Dec. 21, 1896 |  
| Granted: | Apr. 13, 1897 |  
 
USPTO (New site tip)| Patent Pictures:
	      
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			1 | 2
	        ] |  |  |  | Osborn B. Hall patent April 13, 1897 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | Gripping sleeves clamp into a frame.  Designed as a non-marring, non-crushing wrench for brass and similar soft metal threaded pipe. |  |