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发明名称
Valve having self-cleaning seat
摘要
申请公布号
US3089504(A)
申请公布日期
1963.05.14
申请号
US19600057799
申请日期
1960.10.28
申请人
CRAWFORD CHARLES P
发明人
CRAWFORD CHARLES P.
分类号
F16K1/42
主分类号
F16K1/42
代理机构
代理人
主权项
地址
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