| US Patent: 87,796 
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| Improvement in auger-bits Double-twist auger
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| Patentee: |  |
 | Henry L. Shailer (exact or similar names) - Deep River, CT |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Mar. 16, 1869 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | Shailer was the son-in-law of Russell Jennings. In 1879 he bought Ezra L'Hommedieu's operations in nearby Chester, CT, and ran them for a couple of years before selling them to Jennings. |  |