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发明名称
Photographic plate
摘要
申请公布号
US2115339(A)
申请公布日期
1938.04.26
申请号
US19320639851
申请日期
1932.10.27
申请人
ALUMINUM COMPANY OF AMERICA
发明人
MASON RALPH BRYANT
分类号
G03C1/77
主分类号
G03C1/77
代理机构
代理人
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地址
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