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发明名称
LEVEL INDICATOR
摘要
申请公布号
GB8817888(D0)
申请公布日期
1988.09.01
申请号
GB19880017888
申请日期
1988.07.27
申请人
COTTENHAM, R B
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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