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| All Patents in class 433/110 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 157,651 | Dec. 08, 1874 | N. Stow | Improvement in dental engines | |
| 199,779 | Jan. 29, 1878 | W.G. Bonwill | Dental Engine | ||
| 236,080 | Dec. 28, 1880 | B.J. Quattlebaum | Portable Dental Engine | ||
| 460,795 | Oct. 06, 1891 | A.J. Harris | Dental Engine Head | ||