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| All Patents in class 30/43.92 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 968,726 | Aug. 30, 1910 | O.C. Wysong | Abrasive apparatus | |
| 2,862,423 | Dec. 02, 1958 | M.W. Kelton, P.A. Warren | Powered Deburring Device | ||