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| All Patents in class 433/129 | |||||
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| Number | Date | Patentee | Title | Type | |
| 491,316 | Feb. 07, 1893 | M. Dahl, J.E. Low | Tool Holder | dental apparatus | |
| 563,131 | Jun. 30, 1896 | B.S. Brown | Dental Handpiece | dental apparatus | |
| 713,319 | Nov. 11, 1902 | C.A. Lundberg | Dental Tool Holder | dental tools | |
| 906,869 | Dec. 15, 1908 | C.B. Gehringer | Dental Tool Holder | dental tools | |
| 2,071,954 | Feb. 23, 1937 | L. Scruggs | Chuck or Tool Holder | chucks | |