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| All Patents in class 384/476 | |||||
| Number | Date | Patentee | Title | Type | |
| 3,620,586 | Nov. 16, 1971 | C.R. Maastricht | Preload Spindle Bearing for Machine Tool | metalworking machine bearings | |
| 4,934,838 | Jun. 19, 1990 | R.W. Morner | Frame member for supporting multiple bearings with heat barrier slot | ||