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经营范围
发明名称
Improvements in or relating to paper-making machines
摘要
申请公布号
GB617280(A)
申请公布日期
1949.02.03
申请号
GB19460021764
申请日期
1946.07.22
申请人
RALPH CHALINOR HEYS
发明人
分类号
D21F3/04
主分类号
D21F3/04
代理机构
代理人
主权项
地址
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