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| All Patents in class 384/219 | |||||
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| Number | Title | Classification(s) | |||
| 462,436 | Bearing and supporting device | 384/219 | |||
| 1,482,856 | Bearing for grinding spindles | 384/219, 451/360 | |||
| 1,778,452 | Grinding Machinery | 384/219, 451/340 | |||