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发明名称
Ladder stability indicator
摘要
申请公布号
GB2296767(A)
申请公布日期
1996.07.10
申请号
GB19940026426
申请日期
1994.12.30
申请人
CHARLES * ROBERTSON
发明人
CHARLES * ROBERTSON
分类号
E06C7/00;G01C9/12;(IPC1-7):G01C9/12
主分类号
E06C7/00
代理机构
代理人
主权项
地址
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