US Patent: 980,975 
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| Relieving Attachment for Lathes
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	        Patentees:
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 | Richard K. Le Blond (exact or similar names) - Cincinnati, Hamilton County, OH |  
| William F. Groene (exact or similar names) - Cincinnati, Hamilton County, OH |  
 
 
| USPTO Classifications: |  
| 82/19 |  
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Mar. 28, 1910 | 
 
| Granted: | 
Jan. 10, 1911 | 
 
 
 
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                        Joel Havens "Vintage Machinery" entry for R. K. Leblond Machine Tool Co. 
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