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| All Patents in class 91/152 | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,817 | Nov. 18, 1873 | W. Wright | Compound Engines | ||
| 220,160 | Sep. 30, 1879 | W.J. Liddell | Improvement in compound engines | steam engines | |
| 477,279 | Jun. 21, 1892 | G.S. Strong | Compound engine | steam engines | |