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经营范围
发明名称
Ring combination
摘要
申请公布号
US2119039(A)
申请公布日期
1938.05.31
申请号
US19360088579
申请日期
1936.07.02
申请人
CHANDLER BOYD HERBERT
发明人
BOYD HERBERT CHANDLER
分类号
A44C9/00
主分类号
A44C9/00
代理机构
代理人
主权项
地址
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