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| All Patents in class 123/78C | |||||
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| Picture | Number | Date | Patentee | Title | |
| 651,966 | Jun. 19, 1900 | G.A. Fleury | Explosion Engine | ||
| 668,250 | Feb. 19, 1901 | S.M. Zurawski | Explosive Engine | ||
| 1,665,607 | Apr. 10, 1928 | C.E. Sargent | Internal Combustion Engine | ||