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| All Patents in class 451/432 | |||||
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| Number | Date | Patentee | Title | Type | |
| 966,305 | Aug. 02, 1910 | W.R. Brennan | Grinding Attachment for Sewing Machines | sewing machines | |
| 1,209,594 | Dec. 19, 1916 | A.H. Kling | Axle Truing Device | axle cutters and threaders | |