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发明名称
FRICTION MATERIALS
摘要
申请公布号
GB8921507(D0)
申请公布日期
1989.11.08
申请号
GB19890021507
申请日期
1989.09.22
申请人
T & N TECHNOLOGY LIMITED
发明人
分类号
主分类号
代理机构
代理人
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