| US Patent: 672,455 
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| Squares | 
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| Patentee: |  |
 | Moses Nicholls (exact or similar names) - Glenwood, IA |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Nov. 13, 1897 |  
| Granted: | Apr. 23, 1901 |  USPTO (New site tip)
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                        Russ Allen.
 
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| Description: |  | Arrangement and combination of the figures on the square where key measurements are aligned with the inch mark they relate to.
Utilized on Nicholls 100-R Carpenter Square. |  |