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| All Patents in class 91/215 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,878 | Jan. 10, 1845 | J.H. Towne | Oscillating Steam Engine | oscillating steam engines | |
| 48,904 | Jul. 25, 1865 | H.T. Carter | Oscillating Steam Engine | oscillating steam engines | |
| 52,024 | Jan. 16, 1866 | F. Brown | Oscillating Steam Engine | oscillating steam engines | |
| 120,846 | Nov. 14, 1871 | N.B. Baldwin | Propelling Power | steam traction engines | |