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发明名称
STAIRCASES
摘要
申请公布号
CA1028473(A)
申请公布日期
1978.03.28
申请号
CA19770282969
申请日期
1977.07.18
申请人
WARDS CONSTRUCTION (OVERSEAS) LIMITED
发明人
WARD, DONALD L.
分类号
E04F11/022;(IPC1-7):E04F11/022
主分类号
E04F11/022
代理机构
代理人
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