| US Patent: RE4,537 
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| Process for Making Articles of Steel or Steel and Iron Combined Improvements in the Manufacture of Edge-Tools and Implements
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| Patentee: |  |
 | Samuel W. Collins (deceased) (exact or similar names) - Collinsville, CT |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Aug. 29, 1871 |  
 
| Reissue Information: |  | Reissue of 30,668 (Nov. 20, 1860) |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Collins mixed metal castings patent  Aug. 29, 1871 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | Division of process patent for producing striking and edge tools like hammers, axes, etc. Refer to original patent (no. 30,668) for further information. 
This process was used (along with parallel patent no. RE4,538) to produce Collins axes. |  |