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发明名称
Photographic easel
摘要
申请公布号
US2704959(A)
申请公布日期
1955.03.29
申请号
US19520302470
申请日期
1952.08.04
申请人
MYERS HARVEY F
发明人
MYERS HARVEY F.
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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