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发明名称
Marking of films
摘要
申请公布号
US1962216(A)
申请公布日期
1934.06.12
申请号
US19300428996
申请日期
1930.02.17
申请人
RADIO CORPORATION OF AMERICA
发明人
SCHIFFL FRANK
分类号
G03C11/02
主分类号
G03C11/02
代理机构
代理人
主权项
地址
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