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发明名称
Vacuum breaker
摘要
申请公布号
US1962381(A)
申请公布日期
1934.06.12
申请号
US19320647349
申请日期
1932.12.15
申请人
THE JAMES LEFFEL & COMPANY
发明人
BIGGS GEORGE A.
分类号
F03B15/18
主分类号
F03B15/18
代理机构
代理人
主权项
地址
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