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经营范围
发明名称
Umbrella construction
摘要
申请公布号
US2661011(A)
申请公布日期
1953.12.01
申请号
US19490105927
申请日期
1949.07.21
申请人
GEORGE B. COHEN
发明人
COHEN DAVID M.
分类号
A45B25/10
主分类号
A45B25/10
代理机构
代理人
主权项
地址
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