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发明名称
CAVITY FLOOR
摘要
申请公布号
GB1556361(A)
申请公布日期
1979.11.21
申请号
GB19750026963
申请日期
1975.06.25
申请人
HARVEY M
发明人
分类号
E04F15/024;(IPC1-7):04F15/024
主分类号
E04F15/024
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