发明名称 |
Ultrasonic machining tool for machining orthodontic brackets |
摘要 |
An orthodontic bracket and method of making same wherein the bracket has at least one tiewing integrally formed with a base portion. In one form of the invention the bracket is provided with at least one longitudinally extending groove which extends into the base portion, the groove having at least a portion extending beyond at least a portion of the groove opening. In another aspect of the present invention is directed to a method of making an orthodontic bracket using ultrasonic machining techniques.
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申请公布号 |
US4961782(A) |
申请公布日期 |
1990.10.09 |
申请号 |
US19890445489 |
申请日期 |
1989.12.04 |
申请人 |
MANUFACTURERS HANOVER TRUST COMPANY |
发明人 |
REHER, JAMES F.;FARZIN-NIA, FARROKH |
分类号 |
A61C7/14 |
主分类号 |
A61C7/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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