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| All Patents in class 92/134 | |||||
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| Number | Date | Patentee | Title | Type | |
| 143,292 | Sep. 30, 1873 | D.B. Caldwell, J.H. McGowan | Crank-Connection for Steam Engines | steam engine crank rods | |
| 514,169 | Feb. 06, 1894 | N. Tesla | Reciprocating engine | ||
| 626,368 | Jun. 06, 1899 | W.E. Crane | Vertical Engine | steam engines | |