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发明名称
Schuelerrechengeraet
摘要
申请公布号
DE1497742(A1)
申请公布日期
1969.07.17
申请号
DE19661497742
申请日期
1966.11.30
申请人
SCHULZ,VOLKER
发明人
SCHULZ,VOLKER
分类号
G09B19/02
主分类号
G09B19/02
代理机构
代理人
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地址
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