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发明名称
Philatelic cover mount and the like
摘要
申请公布号
US2817171(A)
申请公布日期
1957.12.24
申请号
US19540477614
申请日期
1954.12.27
申请人
DAS EGGES A
发明人
DAS EGGES A.
分类号
B42F5/02
主分类号
B42F5/02
代理机构
代理人
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