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发明名称
PHOTOELECTRIC GUARD
摘要
申请公布号
GB8714241(D0)
申请公布日期
1987.07.22
申请号
GB19870014241
申请日期
1987.06.17
申请人
CLARKSON, D
发明人
分类号
主分类号
代理机构
代理人
主权项
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