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发明名称
Valve
摘要
申请公布号
US1832279(A)
申请公布日期
1931.11.17
申请号
US19290390676
申请日期
1929.09.06
申请人
CLIFFORD ROGER W
发明人
CLIFFORD ROGER W.
分类号
F16K3/30
主分类号
F16K3/30
代理机构
代理人
主权项
地址
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