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经营范围
发明名称
Exhalation valve
摘要
申请公布号
US2519349(A)
申请公布日期
1950.08.22
申请号
US19450621154
申请日期
1945.10.08
申请人
BURNS HENRY L;WULFF VERNER J
发明人
BURNS HENRY L.;WULFF VERNER J.
分类号
F16K15/02
主分类号
F16K15/02
代理机构
代理人
主权项
地址
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