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发明名称
Valve assemblies
摘要
申请公布号
GB2123117(A)
申请公布日期
1984.01.25
申请号
GB19820019534
申请日期
1982.07.06
申请人
* DOBSON PARK INDUSTRIES PLC
发明人
ANTHONY GEORGE * HALL;JOHN * MARSH
分类号
E21D23/16;E21D23/26;(IPC1-7):F16K31/12;F16K11/10
主分类号
E21D23/16
代理机构
代理人
主权项
地址
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