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发明名称
Improvements in or relating to expandable and collapsible stands for ladders
摘要
申请公布号
GB1000729(A)
申请公布日期
1965.08.11
申请号
GB19630021696
申请日期
1963.05.30
申请人
HARSCO CORPORATION
发明人
分类号
E06C1/39;E06C7/42
主分类号
E06C1/39
代理机构
代理人
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地址
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