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发明名称
Dental X-ray film identifier
摘要
申请公布号
US2390397(A)
申请公布日期
1945.12.04
申请号
US19450573370
申请日期
1945.01.18
申请人
STADLER FRANK J
发明人
STADLER FRANK J.
分类号
G03B42/04
主分类号
G03B42/04
代理机构
代理人
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