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| All Patents in class 415/227 | |||||
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| Number | Date | Patentee | Title | Type | |
| 17,426 | Jun. 02, 1857 | R. Daniels | Water-wheel | water wheels | |
| 2,741,992 | Apr. 17, 1956 | R.C. Glazebrook | Bladeless Impeller Balance Means | centrifugal pumps | |