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经营范围
发明名称
Ball valve having resilient seats
摘要
申请公布号
US3334862(A)
申请公布日期
1967.08.08
申请号
US19640394738
申请日期
1964.09.08
申请人
YARWAY CORPORATION
发明人
JR. WILLIAM C. HOOKWAY,
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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