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发明名称
Rechenstab
摘要
申请公布号
DE1115967(B)
申请公布日期
1961.10.26
申请号
DE1952F009494
申请日期
1952.07.15
申请人
A.W. FABER-CASTELL
发明人
TEGTMEYER HEINRICH;BACHMANN HARALD
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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