| US Patent: 228,712 
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| Air-Engine | 
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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 |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | May 01, 1879 |  
| Granted: | Jun. 08, 1880 |  
 
USPTO (New site tip)| Patent Pictures:
	      
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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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