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发明名称
Valve assembly
摘要
申请公布号
US2652857(A)
申请公布日期
1953.09.22
申请号
US19500176422
申请日期
1950.07.28
申请人
PAUL ENGSTRUM ASSOCIATES, INC.
发明人
ENGSTRUM PAUL
分类号
F16K21/04
主分类号
F16K21/04
代理机构
代理人
主权项
地址
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