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| All Patents in class 451/458 | |||||
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| Number | Date | Patentee | Title | Type | |
| 732,381 | Jun. 30, 1903 | C.C. Stuart | Automatic yielding pressure-bars for sandpapering-machines | sanding machines | |
| 779,630 | Jan. 10, 1905 | F. Urban | Sanding or polishing machine | sanding machines | |