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发明名称
Dispositif transparent de protection des gravures, dessins, photographies et autres objets analogues
摘要
申请公布号
FR850887(A)
申请公布日期
1939.12.28
申请号
FRD850887
申请日期
1939.02.27
申请人
发明人
SIEGFRIED MARC
分类号
B44C5/02
主分类号
B44C5/02
代理机构
代理人
主权项
地址
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