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发明名称
Device for signalling the attainment of a predetermined level of material in a receptacle
摘要
申请公布号
GB1006364(A)
申请公布日期
1965.09.29
申请号
GB19620023572
申请日期
1962.06.19
申请人
BLACK PRODUCTS CO.
发明人
分类号
G01F23/22
主分类号
G01F23/22
代理机构
代理人
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