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发明名称
WANDKLAPPTAFEL IN BUCHFORM.
摘要
申请公布号
DE1737129(U)
申请公布日期
1957.01.03
申请号
DE195500D1109U
申请日期
1955.09.26
申请人
KARL DRETZLER
发明人
KARL DRETZLER
分类号
主分类号
代理机构
代理人
主权项
地址
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