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发明名称
Safety indicator for ladder
摘要
申请公布号
GB2201988(A)
申请公布日期
1988.09.14
申请号
GB19880005083
申请日期
1988.03.03
申请人
BERISFORD * GARDNER;KEITH * TURNER
发明人
BERISFORD * GARDNER;KEITH * TURNER
分类号
E06C7/00;G01C9/28;(IPC1-7):E06C7/00
主分类号
E06C7/00
代理机构
代理人
主权项
地址
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