| US Patent: 289,485 
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| Heater for Air Engines | 
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| Patentees: |  
 | James A. Woodbury (exact or similar names) - Boston, Suffolk County, MA |  | Joshua Merrill (exact or similar names) - Boston, Suffolk County, MA |  | George Patten (exact or similar names) - Boston, Suffolk County, MA |  | Edward F. Woodbury (exact or similar names) - Boston, Suffolk County, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | May 16, 1883 |  
| Granted: | Dec. 04, 1883 |  USPTO (New site tip)
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                        Joel Havens
 "Vintage Machinery" entry for Woodbury, Merrill, Patten and Woodbury Air Engine Co.
 The Woodbury Hot Air Engine
 
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