| US Patent: RE4,516 
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| Improvement in Machines for Manufacturing Auger-Bits Machine for Upsetting Cook's Bits
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| USPTO Classifications: |  | 76/2 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Aug. 15, 1871 |  
 
| Reissue Information: |  | Reissue of 78,769 (Jun. 09, 1868) |  | Reissued as RE5,624 (Oct. 21, 1873) |  
 
USPTO (New site tip)| Patent Pictures:
	      
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                        Jeff Joslin (dm)
 
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| Description: |  | Description seems to be identical with the original patent. |  |