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发明名称
Dental film holder
摘要
申请公布号
US2084092(A)
申请公布日期
1937.06.15
申请号
US19360117605
申请日期
1936.12.24
申请人
RALPH KENNEY
发明人
KENNEY RALPH
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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