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发明名称
Kreisfoermiger Rechenschieber mit Reibungskupplung
摘要
申请公布号
DE916908(C)
申请公布日期
1954.08.19
申请号
DE1953W010967
申请日期
1953.04.08
申请人
DIPL.-ING. FERDINAND WENZEL
发明人
WENZEL DIPL.-ING. FERDINAND
分类号
G06G1/04
主分类号
G06G1/04
代理机构
代理人
主权项
地址
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