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发明名称
Siphonless trap
摘要
申请公布号
US2630874(A)
申请公布日期
1953.03.10
申请号
US19490084121
申请日期
1949.03.29
申请人
LANGDON JESSE D
发明人
LANGDON JESSE D.
分类号
E03C1/284;E03C1/294
主分类号
E03C1/284
代理机构
代理人
主权项
地址
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