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发明名称
Sliding valve spool seal
摘要
申请公布号
US2782801(A)
申请公布日期
1957.02.26
申请号
US19530331573
申请日期
1953.01.16
申请人
LUDWIG WALTER D
发明人
LUDWIG WALTER D.
分类号
F16K11/07
主分类号
F16K11/07
代理机构
代理人
主权项
地址
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