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All Patents in class 433/130 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 553,124 | Jan. 14, 1896 | C.A. Meister | Angle Attachment for Dental Handpieces or other Attachment | |
1,688,136 | Oct. 16, 1928 | A.P. Jurgensen, H.E. Chayes | Dental Tool Holder |