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发明名称
METHOD OF STRENGTHENING PAPER
摘要
申请公布号
GB8830252(D0)
申请公布日期
1989.02.22
申请号
GB19880030252
申请日期
1988.12.24
申请人
HEPWORTH MINERALS & CHEMICALS LIMITED
发明人
分类号
D21H17/48
主分类号
D21H17/48
代理机构
代理人
主权项
地址
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