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发明名称
Improvements in or relating to anti-siphon drainage systems
摘要
申请公布号
GB499295(A)
申请公布日期
1939.01.20
申请号
GB19380023873
申请日期
1937.07.29
申请人
WILLIAM WALTER SCOTT-MONCRIEFF
发明人
分类号
E03C1/122;H03H9/05
主分类号
E03C1/122
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