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| All Patents in class 433/108 | |||||
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| Number | Date | Patentee | Title | Type | |
| 148,920 | Mar. 24, 1874 | W.G. Bonwill | Dental Drills and Lathes | dental apparatus | |
| 363,291 | May 17, 1887 | W.W. Grant | Dental Engine | dental apparatus | |