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| All Patents in class 55/446 | |||||
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| Number | Date | Patentee | Title | Type | |
| 335,923 | Feb. 09, 1886 | H. Hennig | Spark Arrester | locomotive exhausts | |
| 512,681 | Jan. 16, 1894 | N. Clute | Oil Extractor | separators | |
| 839,777 | Dec. 25, 1906 | S.T. Nicholson, J. Lloyd, W. Lloyd | Steam-eliminator | steam and water separators | |