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发明名称
Valve
摘要
申请公布号
US1949834(A)
申请公布日期
1934.03.06
申请号
US19310535991
申请日期
1931.05.08
申请人
HEGGEM ALFRED G
发明人
HEGGEM ALFRED G.
分类号
F16K5/20
主分类号
F16K5/20
代理机构
代理人
主权项
地址
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