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经营范围
发明名称
Continuously extensible, retractable, and collapsible structure
摘要
申请公布号
US2461429(A)
申请公布日期
1949.02.08
申请号
US19470719778
申请日期
1947.01.02
申请人
LARSON KARL O
发明人
LARSON KARL O.
分类号
E06C5/30
主分类号
E06C5/30
代理机构
代理人
主权项
地址
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