| US Patent: 804,999 
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| Variable-Speed Gearing | 
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| Patentee: |  |
 | William E. Blair (exact or similar names) - Buffalo, Erie County, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jul. 08, 1904 |  
| Granted: | Nov. 21, 1905 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Claim: 
This invention relates to a speed-changing and reversing mechanism designed more particularly for use in motor-vehicles, although the same is also desirable for lathes and other machines requiring a shaft or spindle to be driven at different rates of speed and in both directions. |  |