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发明名称
Zeichengerät.
摘要
申请公布号
CH157973(A)
申请公布日期
1932.10.31
申请号
CHD157973
申请日期
1931.04.10
申请人
V. BERLEPSCH,WOLFGANG;KELLER,ERNST
发明人
BERLEPSCH,WOLFGANG V.;KELLER,ERNST
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