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经营范围
发明名称
Matrix retainer
摘要
申请公布号
US2152877(A)
申请公布日期
1939.04.04
申请号
US19360108830
申请日期
1936.11.02
申请人
MARTIN H. CHAKOIAN
发明人
DAGAVARIAN HAGOP
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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