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| All Patents in class 433/142 | |||||
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| Number | Date | Patentee | Title | Type | |
| 383,031 | May 15, 1888 | A. Allgoever | Drill-stock | hand drills | |
| 449,217 | Mar. 31, 1891 | A.T. Good | Polishing Cone | dental apparatus | |