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经营范围
发明名称
Improvements in or relating to ladder stiles
摘要
申请公布号
GB746956(A)
申请公布日期
1956.03.21
申请号
GB19530017886
申请日期
1953.06.27
申请人
CYRIL HARCOURT MATTHEWS
发明人
分类号
E06C7/08
主分类号
E06C7/08
代理机构
代理人
主权项
地址
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