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发明名称
ZEICHENGERAET ZUM FLUCHTPUNKTPERSPEKTIVISCHEN ZEICHNEN
摘要
申请公布号
DE6607220(U)
申请公布日期
1971.03.04
申请号
DE19660007220U
申请日期
1965.03.19
申请人
ARKENBERG, KARL-HEINZ
发明人
ARKENBERG, KARL-HEINZ
分类号
主分类号
代理机构
代理人
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