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| All Patents in class 433/109 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 366,484 | Jul. 12, 1887 | A. Jamieson | Dental Engine | ||
| 562,508 | Jun. 23, 1896 | G.L. Harrison, A.W. Browne | Lathe for Operating Tools by Flexible Shafts | ||
 | 1,632,860 | Jun. 21, 1927 | G.A. Terry | Dental Handpiece Wrist Joint Guard | |