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发明名称
Dental matrix holder
摘要
申请公布号
US2043999(A)
申请公布日期
1936.06.16
申请号
US19340750107
申请日期
1934.10.26
申请人
HARPER WILLIAM E
发明人
HARPER WILLIAM E.
分类号
A61C5/12
主分类号
A61C5/12
代理机构
代理人
主权项
地址
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