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经营范围
发明名称
ANNULAR SEALS
摘要
申请公布号
GB8321668(D0)
申请公布日期
1983.09.14
申请号
GB19830021668
申请日期
1983.08.11
申请人
NATIONAL NUCLEAR CORPORATION LTD
发明人
分类号
F16L7/02;(IPC1-7):F16L9/18
主分类号
F16L7/02
代理机构
代理人
主权项
地址
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