| US Patent: 437,507 
 | 
| Petroleum or Oil Motor Engine | 
| 
| Patentee: |  |
 | Nicolaus August Otto (exact or similar names) - Cologne,  German Empire |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
 | 
| Patent Dates: |  
| Applied: | May 07, 1890 |  
| Granted: | Sep. 30, 1890 |  USPTO (New site tip)
 Google Patents
 Report data errors or omissions to steward 
                        Joel Havens
 "Vintage Machinery" entry for Otto Gas Engine Works
 
 | 
| 
| Description: |  | Patented in Belgium, 19 Apr 1890, #90,245; in Switzerland, 21 Apr 1890 & 21 Jun 1890, # 2,035; in Norway, 25 Apr 1890 & 14 Jul 1890, #1.746 and in Italy, 12 May 1890, #LIII, 426. |  |