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发明名称
Rechenvorrichtung
摘要
申请公布号
DE863136(C)
申请公布日期
1953.01.15
申请号
DE1949P034834
申请日期
1949.02.23
申请人
BERGER HEINZ WERNER
发明人
BERGER HEINZ WERNER
分类号
G09B19/02
主分类号
G09B19/02
代理机构
代理人
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