| US Patent: 425,781 
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| Knife-grinding machine | 
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| Patentee: |  |
 | William D. Graves, Jr. (exact or similar names) - Presque Isle, ME |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 01, 1890 |  
| Granted: | Apr. 15, 1890 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | "My invention relates to improvements in knife-grinding machines, and has for its object to provide a simple, compact, automatically-acting device, whereby straight-edged knives for various machines may be ground to a bevel edge rapidly and accurately." |  |