| US Patent: 295,415 
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| Gas Engine | 
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| Patentees: |  
 | Johannes A. Menck (exact or similar names) - Ottensen,  Germany |  | Alexander Hambrock (exact or similar names) - Ottensen,  Germany |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 05, 1884 |  
| Granted: | Mar. 18, 1884 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Patented in Germany, 25 Apr 1879, #13,673; 10 Oct 1879, #13,674 and 06 Jan 1880, #14,763. |  |