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| All Patents in class 415/29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 328,710 | Oct. 20, 1885 | C.A. Parsons | Rotary motor | steam turbines | |
| 1,764,463 | Jun. 17, 1930 | R.O. Muller | Speed Governing Mechanism | steam turbines | |