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经营范围
发明名称
BUTTERFLY VALVE
摘要
申请公布号
GB8720907(D0)
申请公布日期
1987.10.14
申请号
GB19870020907
申请日期
1987.09.05
申请人
HATTERSLEY HEATON LTD
发明人
分类号
F16K1/22
主分类号
F16K1/22
代理机构
代理人
主权项
地址
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