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发明名称
Anti-back-siphoning flushing apparatus
摘要
申请公布号
US2235810(A)
申请公布日期
1941.03.25
申请号
US19380239966
申请日期
1938.11.12
申请人
CHARROIN FRANK B
发明人
CHARROIN FRANK B.
分类号
E03C1/10
主分类号
E03C1/10
代理机构
代理人
主权项
地址
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