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发明名称
SEALING DEVICE FOR BUTTERFLY VALVE
摘要
申请公布号
JPS646564(A)
申请公布日期
1989.01.11
申请号
JP19870161812
申请日期
1987.06.29
申请人
OSHIMA AKIRA
发明人
OSHIMA AKIRA
分类号
F16K1/226
主分类号
F16K1/226
代理机构
代理人
主权项
地址
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