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经营范围
发明名称
Means for holding dental films
摘要
申请公布号
US2021190(A)
申请公布日期
1935.11.19
申请号
US19340747018
申请日期
1934.10.05
申请人
MALKASIAN GEORGE D
发明人
MALKASIAN GEORGE D.
分类号
G03B42/04
主分类号
G03B42/04
代理机构
代理人
主权项
地址
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