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发明名称
Photo-printing easel
摘要
申请公布号
US2711670(A)
申请公布日期
1955.06.28
申请号
US19520326712
申请日期
1952.12.18
申请人
CLARKE COMPANY INCORPORATED
发明人
CLARKE ARTHUR J.
分类号
G03B27/58
主分类号
G03B27/58
代理机构
代理人
主权项
地址
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