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| All Patents in class 123/41.57 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 300,453 | Jun. 17, 1884 | E. Edwards | Gas Engine | ||
| 343,745 | Jun. 15, 1886 | S. Wilcox | Gas Engine | ||
| 1,306,496 | Jun. 10, 1919 | P. Mohrdieck | Internal-combustion engine | ||