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发明名称
Vacuum breakers
摘要
申请公布号
US2877789(A)
申请公布日期
1959.03.17
申请号
US19570694853
申请日期
1957.11.06
申请人
SLOAN VALVE COMPANY
发明人
CAMPBELL ROBERT E.
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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