| US Patent: 2,650,512 
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| Pipe Wrench with Nut Fulcrumed Pivoted Outer Jaw | 
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| Patentees: |  
 | Walter J. Johnson (exact or similar names) - Buffalo, NY |  | Carl G. Ertell (exact or similar names) - Eggertsville, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jul. 14, 1950 |  
| Granted: | Sep. 01, 1953 |  USPTO (New site tip)
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                        Stan Schulz
 
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| Description: |  | Fraser, Myers & Manley - patent attorneys 
Original application 14 Jul 1950. Divided and this application filed 21 Nov 1951. |  |