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经营范围
发明名称
Improvements in or relating to step ladders, trestles, working platforms or the like
摘要
申请公布号
GB783518(A)
申请公布日期
1957.09.25
申请号
GB19540008266
申请日期
1954.03.22
申请人
CYRIL HARCOURT MATTHEWS
发明人
分类号
B60B33/06;E06C1/397
主分类号
B60B33/06
代理机构
代理人
主权项
地址
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