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发明名称
PHOTOGRAPHIC ELEMENT
摘要
申请公布号
CA438613(A)
申请公布日期
1946.12.17
申请号
CAD438613
申请日期
申请人
CANADIAN INDUSTRIES LIMITED
发明人
PAUL ROLLAND AUSTIN
分类号
主分类号
代理机构
代理人
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地址
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