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发明名称
Gerät zum Zeichnen von Kegelschnittlinien.
摘要
申请公布号
AT143806(B)
申请公布日期
1935.12.10
申请号
ATD143806
申请日期
1935.01.28
申请人
LEOPOLD JOSEF WINDHOLZ;FELIX WINDHOLZ
发明人
LEOPOLD JOSEF WINDHOLZ;FELIX WINDHOLZ
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主分类号
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