| US Patent: 815,389 
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| Try-Square | 
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| Patentee: |  |
 | Justus A. Traut (exact or similar names) - New Britain, CT |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 11, 1906 |  
| Granted: | Mar. 20, 1906 |  USPTO (New site tip)
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                        Ralph Brendler
 
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| Description: |  | This is a new method of manucaturing squares.  The patent was assigned to Stanley, but apparently never produced. |  |