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发明名称
Improvements in hand-pieces for dental drills
摘要
申请公布号
GB515349(A)
申请公布日期
1939.12.04
申请号
GB19380012698
申请日期
1938.04.28
申请人
BJARNE TANGERUD
发明人
分类号
A61C1/18
主分类号
A61C1/18
代理机构
代理人
主权项
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