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发明名称
Improved antisiphonic liquid seal trap
摘要
申请公布号
GB323979(A)
申请公布日期
1930.01.16
申请号
GB19290009436
申请日期
1929.03.23
申请人
JOHN MCDERMID
发明人
分类号
E03C1/294
主分类号
E03C1/294
代理机构
代理人
主权项
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