US Patent: 231,094 
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| File-cutting machine
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	        Patentee:
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 | Treat T. Prosser (exact or similar names) - Chicago, IL |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Apr. 08, 1880 | 
 
| Granted: | 
Aug. 10, 1880 | 
 
 
 
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		  Patent Pictures:
	      
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                        Jeff Joslin 
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        Description: |  
| See the biography of the inventor in the description for patent 15,438. |  
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