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经营范围
发明名称
FLOW COMPARING SHUT-OFF VALVE
摘要
申请公布号
US3519010(A)
申请公布日期
1970.07.07
申请号
USD3519010
申请日期
1967.12.21
申请人
MCDONNELL DOUGLAS CORP.
发明人
RAYMOND P. HELLING;ALLEN H. OWEN JR.
分类号
F15B20/00
主分类号
F15B20/00
代理机构
代理人
主权项
地址
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