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发明名称
Roll film camera attachment
摘要
申请公布号
US2312887(A)
申请公布日期
1943.03.02
申请号
US19400316244
申请日期
1940.01.29
申请人
ELLEN ALDER
发明人
ERICKSSON EMIL
分类号
G03B19/04
主分类号
G03B19/04
代理机构
代理人
主权项
地址
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