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发明名称
Valve apparatus
摘要
申请公布号
US2920653(A)
申请公布日期
1960.01.12
申请号
US19540443838
申请日期
1954.07.16
申请人
WOLFF CHARLES J
发明人
WOLFF CHARLES J.
分类号
F16K11/044
主分类号
F16K11/044
代理机构
代理人
主权项
地址
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