| US Patent: 640,084 
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| Chain Pipe Wrench | 
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| Patentees: |  
 | Philip Henry Bohner (exact or similar names) - Peckville, PA |  | Charles Ambrose Bohner (exact or similar names) - Paducah, TX |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 29, 1899 |  
| Granted: | Dec. 26, 1899 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Philia H. and Charles A. Bohner patent Dec. 26, 1899 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | Circular gripping sections are interposed between longer flat links in the chain. |  |