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发明名称
LEHRGERAETE ZUR DEMONSTRATION DES GESCHLOSSENEN REGELKREISES
摘要
申请公布号
DE2325843(A1)
申请公布日期
1974.12.19
申请号
DE19732325843
申请日期
1973.05.22
申请人
FRENK, HELMUTH, DR., 6330 WETZLAR
发明人
FRENK, HELMUTH, DR., 6330 WETZLAR
分类号
G09B23/18;G09B25/02;(IPC1-7):G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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