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| Patents for Marriott Roger | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,456,797 | Jul. 22, 1969 | M. Roger | Apparatus and method for cleaning dirty liquid | ||
| 4,110,218 | Aug. 29, 1978 | M. Roger, M.R. Estabrook | Liquid cleaning apparatus having cyclonic separators | ||