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发明名称
Pin-control regulating valve
摘要
申请公布号
US1801959(A)
申请公布日期
1931.04.21
申请号
US19290411296
申请日期
1929.12.03
申请人
HOPKINS ROBERT C
发明人
HOPKINS ROBERT C.
分类号
F16K1/38
主分类号
F16K1/38
代理机构
代理人
主权项
地址
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