US Patent: 319 
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Hackling Machine Improvement in Machines for Breaking and Dressing Hemp and Flax
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	        Patentees:
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 | Chapman Warner (exact or similar names) - Belvidere, Warren County, NJ |  
| Abraham T. Mixsell (exact or similar names) - Belvidere, Warren County, NJ |  
| Edwin J. Horn (exact or similar names) - Belvidere, Warren County, NJ |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Granted: | 
Jul. 31, 1837 | 
 
 
 
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                        Joel Havens 
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