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发明名称
WINKEL ZUR FESTSTELLUNG DES GOLDNEN SCHNITTS
摘要
申请公布号
DE6943149(U)
申请公布日期
1970.04.02
申请号
DE19690043149U
申请日期
1969.11.05
申请人
EBERHARD DIRR
发明人
EBERHARD DIRR
分类号
主分类号
代理机构
代理人
主权项
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