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经营范围
发明名称
Extensible column
摘要
申请公布号
US2675211(A)
申请公布日期
1954.04.13
申请号
US19510241022
申请日期
1951.08.09
申请人
GERARD REGOORD
发明人
REGOORD GERARD
分类号
E04H12/18
主分类号
E04H12/18
代理机构
代理人
主权项
地址
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