| US Patent: 462,447 
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| Gas Motor | 
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| Patentees: |  
 | Paul Niel (exact or similar names) - Paris,  France |  | Alexandrine Janiot (exact or similar names) - Paris,  France |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 29, 1890 |  
| Granted: | Nov. 03, 1891 |  USPTO (New site tip)
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                        Joel Havens
 
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| Description: |  | Patented in France, 15 Oct 1888, #193,542; in Belgium, 14 Jun 1889, #86,638; in Spain, 26 Oct 1889, #10,137; in Switzerland, 10 Dec 1889, #26,508; in Germany, 10 Dec 1889, #54,179 and in Austria-Hungary, 17 Feb 1890. |  |