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发明名称
Gerät zum Zeichnen perspektivischer Projektionen.
摘要
申请公布号
AT125138(B)
申请公布日期
1931.10.26
申请号
ATD125138
申请日期
1929.12.03
申请人
ING. JAN FEJTEK
发明人
ING. JAN FEJTEK
分类号
主分类号
代理机构
代理人
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