| US Patent: 1,438X 
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| Descending saw mill | 
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| Patentees: |  
 | Samuel Merrill (exact or similar names) - Georgetown, DC |  | Stephen Belknap (exact or similar names) - Georgetown, DC |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Feb. 15, 1811 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | Because of the Patent Office fire in December 1836, little is known about this patent. There are no patent specification or drawings available. |  |