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| All Patents in class 494/70 | |||||
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| Number | Date | Patentee | Title | Type | |
| 825,412 | Jul. 10, 1906 | E.C. Pawley | Centrifugal liquid-separator | separators | |
| 1,120,882 | Dec. 15, 1914 | G.M. Anderson | Tool for cleaning cream-separator plates | separators | |
| 1,168,454 | Jan. 18, 1916 | C.O. Anderson | Centrifugal Cream Separator | separators | |