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发明名称
HALTEVORRICHTUNG FUER UNTERRICHTSMITTEL, INSBESONDERE FUER DAS FLIESSENDE GESCHICHTSBAND.
摘要
申请公布号
DE1653610(U)
申请公布日期
1953.04.09
申请号
DE195200B1498U
申请日期
1952.12.03
申请人
EUGEN BOEHME
发明人
EUGEN BOEHME
分类号
主分类号
代理机构
代理人
主权项
地址
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