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发明名称
Vacuum breaker
摘要
申请公布号
US2189694(A)
申请公布日期
1940.02.06
申请号
US19370135936
申请日期
1937.04.09
申请人
THE BEATON & CADWELL MANUFACTURING COMPANY
发明人
WORK ERNEST W.
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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