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| All Patents in class 279/2.17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 163,217 | May 11, 1875 | P.B. Lawson | Expanding Mandrel | mandrels and arbors | |
| 574,763 | Jan. 05, 1897 | F.A. Rudolph | Dental Tool | dental apparatus | |