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发明名称
GRADUATED DENSITY FELT
摘要
申请公布号
GB8905793(D0)
申请公布日期
1989.04.26
申请号
GB19890005793
申请日期
1989.03.14
申请人
EMHART MATERIALS UK LIMITED
发明人
分类号
D04H1/4258;D04H1/4266;D04H1/4291;D04H1/43;D04H1/435;D04H1/46
主分类号
D04H1/4258
代理机构
代理人
主权项
地址
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