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| All Patents in class 60/681 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,351X | Dec. 28, 1832 | S.H. Long | Locomotive steam engine and other railroad carriages | steam engines | |
| 227,566 | May 11, 1880 | E.W. Mills | Portable Engines | portable steam engines | |