| US Patent: 200,056 
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| Improvement in oil-stoves | 
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| Patentees: |  
 | Thomas Hall (exact or similar names) - Brooklyn, NY |  | Thomas J. Whitney (exact or similar names) - Philadelphia, PA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Apr. 07, 1877 |  
| Granted: | Feb. 05, 1878 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Thomas Hall
 
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| Description: |  | The assignee had patented and was manufacturing an early typewriter. He would also patent and manufacture a drill grinder. |  |