US Patent: RE8,215 
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| Improvement in braces for bits
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	        Patentee:
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 | Nelson Spofford (exact or similar names) - Haverhill, MA |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
May 01, 1878 | 
 
| Granted: | 
May 07, 1878 | 
 
 
 
| Reissue Information: |  
| Reissue of RE2,576 (Apr. 23, 1867) |  
 
 
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                        Kirk Eppler 
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        Description: |  
| Extended November 1, 1873 for seven years 
Extended twice. (April 23, 1867 as RE2,576 & November 1, 1873 as RE8,215) |  
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