| US Patent: 169,027 
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| Improvement in joiners' clamps | 
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| Patentee: |  |
 | Gustav Adolph Naumann (exact or similar names) - St. Louis, MO |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Sep. 06, 1875 |  
| Granted: | Oct. 19, 1875 |  USPTO (New site tip)
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                        Carl Matthews
 
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| Description: |  | This patent was subsequently improved in 174,838. Clamp is the "Jorgensen" style, but with a quick-release mechanism. |  |