| US Patent: 341,538 
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| Gas Engine | 
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| Patentees: |  
 | Charles Henry Andrew (exact or similar names) - Chester, Cheshire County,  England |  | Hugh Williams (exact or similar names) - Stockport, Chester County,  England |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jul. 06, 1885 |  
| Granted: | May 11, 1886 |  USPTO (New site tip)
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                        Joel Havens
 
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