| US Patent: 3,487,865 
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| Cutter-head | 
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| Patentees: |  
 | Daniel Hill (exact or similar names) - Kelowna, BC Canada |  | Frederic F. Chapman (exact or similar names) - Coquitlam, BC Canada |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Jan. 06, 1970 |  
 
| Reissue Information: |  | Reissued as RE27,654 (Jun. 05, 1973) |  USPTO (New site tip)
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                        Jeff Joslin
 
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