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| All Patents in class 91/182 | |||||
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| Number | Date | Patentee | Title | Type | |
| 533,094 | Jan. 29, 1895 | J.B. Stanwood | Valve-gear | steam engine valve gear | |
| 1,544,644 | Jul. 07, 1925 | F.A. Jimerson | Fluid-actuated rotary tool | pneumatic tools | |
| 1,927,524 | Sep. 19, 1933 | H.G. Mueller | Steam Engine Inlet Valve Gear | steam engine valve gear | |
| 2,094,159 | Sep. 28, 1937 | H.G. Mueller | Valve Mechanism for Steam Engines | steam engine valve gear | |