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发明名称
SWITCHING DEVICE
摘要
申请公布号
GB8331132(D0)
申请公布日期
1983.12.29
申请号
GB19830031132
申请日期
1983.11.22
申请人
BENT, J M H
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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