| US Patent: 597,860 
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| Explosion Engine | 
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| Patentee: |  |
 | Spencer Rolfe (exact or similar names) - Teddington, Middlesex County,  England |  
 
| USPTO Classifications: |  | 123/169R, 123/193.6, 123/195P, 123/25C, 123/25D, 123/25K, 123/25M, 123/25Q, 123/37, 123/543, 123/65B, 184/18, 261/18.2, 261/39.3 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Mar. 13, 1897 |  
| Granted: | Jan. 25, 1898 |  USPTO (New site tip)
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                        Joel Havens
 
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