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发明名称
VORRICHTUNG ZUM HALTEN EINES BUCHES OD. DGL. BEIM LESEN IN LIEGENDER STELLUNG.
摘要
申请公布号
DE1970696(U)
申请公布日期
1967.10.19
申请号
DE196700B1082U
申请日期
1967.05.24
申请人
MANFRED BUECKEN
发明人
MANFRED BUECKEN
分类号
主分类号
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