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| All Patents in class 210/145 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE15,115 | May 31, 1921 | E.D. Mackintosh | Method of driving electric centrifugal machines | ||
| 1,412,145 | Apr. 11, 1922 | H.H. Stephens | Centrifugal machine | washing machines | |