US Patent: 2,170,503 
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| Milling Machine
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	        Patentees:
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 | Mario E. Martellotti (exact or similar names) - Cincinnati, Hamilton County, OH |  
| Hans Ernst (exact or similar names) - Cincinnati, Hamilton County, OH |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Nov. 22, 1937 | 
 
| Granted: | 
Aug. 22, 1939 | 
 
 
 
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                        Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co. 
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        Description: |  
| This patent number was seen on a Cincinnati Milling Machine Co. patent plate. |  
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