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发明名称
IMPROVEMENTS RELATING TO WALL BUILDING AIDS
摘要
申请公布号
GB8819827(D0)
申请公布日期
1988.09.21
申请号
GB19880019827
申请日期
1988.08.20
申请人
PETERSON, L R
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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