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发明名称
Automatic primer valve for sealing floor drain traps and the like
摘要
申请公布号
US3146787(A)
申请公布日期
1964.09.01
申请号
US19620232695
申请日期
1962.10.24
申请人
KEN-RAY BRASS PRODUCTS, INC.
发明人
JR. OTTO A. KUPFER,
分类号
E03C1/296
主分类号
E03C1/296
代理机构
代理人
主权项
地址
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