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经营范围
发明名称
A PIPE GLAND
摘要
申请公布号
GB9306525(D0)
申请公布日期
1993.05.19
申请号
GB19930006525
申请日期
1993.03.29
申请人
BRITISH GAS PLC
发明人
分类号
C04B24/26;F16L55/11;F16L55/164;F16L55/179;F16L55/18
主分类号
C04B24/26
代理机构
代理人
主权项
地址
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