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发明名称
KOHLEPAPIER, FARBPAPIER, DURCHSCHREIBEPAPIER.
摘要
申请公布号
DE1671671(U)
申请公布日期
1954.02.11
申请号
DE195200B0074U
申请日期
1952.08.16
申请人
HEINRICH BIEBER
发明人
HEINRICH BIEBER
分类号
主分类号
代理机构
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