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| All Patents of Type: gas cleaning apparatus | |||||
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| Number | Date | Patentee | Title | Type | |
| 814,698 | Mar. 13, 1906 | F.G. Hobart | Gas Purifier | gas cleaning apparatus | |
| 845,460 | Feb. 26, 1907 | W.W. Gore | Centrifugal Tar Extractor | gas cleaning apparatus | |
| 872,975 | Dec. 03, 1907 | C.E. Sargent | Apparatus for Washing Gas | gas cleaning apparatus | |
| 981,188 | Jan. 10, 1911 | F.G. Hobart, W.W. Gore | Gas Cleaning Apparatus | gas cleaning apparatus | |
| 1,105,868 | Aug. 04, 1914 | J.T. Wilkin | Extractor of liquids and solids from gases | gas cleaning apparatus | |