| US Patent: RE13,957 
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| Chain Repairing Implement | 
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| Patentee: |  |
 | John N. Macdonald (exact or similar names) - Hartford, CT |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Jun. 25, 1912 |  
| Granted: | Aug. 03, 1915 |  
 
| Reissue Information: |  | Reissue of 965,722 (Jul. 26, 1910) |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | John N. Macdonald Reissue Pat. Aug. 3, 1915 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The jaw features are designed to spread and close tire chain cross link connections.
A 1912 ad for the NECESSITY Chain Repair Tool shows a version closely resembling Macdonald's subsequent patent (no. 1,041,826). |  |