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| All Patents in class 110/258 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,418,952 | Dec. 31, 1968 | F.H. Meller | Incinerator | sewage treatment apparatus | |
| 3,557,724 | Jan. 26, 1971 | J.M. Whalen, P. Pan | Incinerator | sewage treatment apparatus | |