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发明名称
Joists
摘要
申请公布号
GB855048(A)
申请公布日期
1960.11.30
申请号
GB19590004664
申请日期
1959.02.10
申请人
ALAN JOHN RANSFORD
发明人
分类号
E04G11/56
主分类号
E04G11/56
代理机构
代理人
主权项
地址
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