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发明名称
Improvements in or relating to scum channels
摘要
申请公布号
GB1111972(A)
申请公布日期
1968.05.01
申请号
GB19640024488
申请日期
1964.06.12
申请人
THE LEEDS FIRECLAY COMPANY LIMITED
发明人
CLAMP JOHN ROBERT
分类号
E04H4/12
主分类号
E04H4/12
代理机构
代理人
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