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经营范围
发明名称
Improvements in or relating to holders for builders' lines
摘要
申请公布号
GB665522(A)
申请公布日期
1952.01.23
申请号
GB19490021661
申请日期
1949.08.19
申请人
WILFRID PIPER
发明人
分类号
E04G21/18
主分类号
E04G21/18
代理机构
代理人
主权项
地址
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