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发明名称
FOLIENBUCH ZUR ARBEITSPROJEKTION (OVERHEAD-, TAGESLICHTPROJEKTION)
摘要
申请公布号
DE7020977(U)
申请公布日期
1970.12.10
申请号
DE19700020977U
申请日期
1970.06.04
申请人
FA. ERNST KLETT
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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