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| All Patents in class 452/93 | |||||
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| Number | Date | Patentee | Title | Type | |
| 564,587 | Jul. 28, 1896 | W. Black | Sandpapering-machine | sanding machines | |
| 1,654,275 | Dec. 27, 1927 | N.A. Strand | Polishing or Buffer Wheel | polishing and buffing machinery | |