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发明名称
Builders floor cramp in malleable iron
摘要
申请公布号
GB341804(A)
申请公布日期
1931.01.22
申请号
GB19300011870
申请日期
1930.04.15
申请人
ROBERT HAZELL
发明人
分类号
E04F21/22
主分类号
E04F21/22
代理机构
代理人
主权项
地址
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