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发明名称
SCHREIBTAFEL.
摘要
申请公布号
DE1633813(U)
申请公布日期
1952.01.24
申请号
DE194900K1869U
申请日期
1949.10.10
申请人
JOSEF KLEESCHULTE
发明人
JOSEF KLEESCHULTE
分类号
主分类号
代理机构
代理人
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