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发明名称
LEHRGERAET.
摘要
申请公布号
DE1994869(U)
申请公布日期
1968.10.17
申请号
DE19681994869U
申请日期
1968.06.22
申请人
BROWN, BOVERI & CIE. AG.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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