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发明名称
Means for preventing back flow
摘要
申请公布号
US2875776(A)
申请公布日期
1959.03.03
申请号
US19560583227
申请日期
1956.05.07
申请人
SKIPWITH JR LEE
发明人
JR. LEE SKIPWITH,
分类号
B05B7/12;B05B7/24;E03C1/10;F16K15/14
主分类号
B05B7/12
代理机构
代理人
主权项
地址
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