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发明名称
VACUUM BREAKING VALVE
摘要
申请公布号
CA392535(A)
申请公布日期
1940.11.19
申请号
CAD392535
申请日期
申请人
JOHN A. BROOKS
发明人
JOHN A. BROOKS
分类号
主分类号
代理机构
代理人
主权项
地址
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