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发明名称
Anzahl der Nullstellen anzeigendes Geraet fuer Rechenschieber
摘要
申请公布号
DE1774209(A1)
申请公布日期
1971.07.08
申请号
DE19681774209
申请日期
1968.05.03
申请人
KATO,SHIGEYOSHI
发明人
KATO,SHIGEYOSHI
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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