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发明名称
Ring
摘要
申请公布号
US2168490(A)
申请公布日期
1939.08.08
申请号
US19390274267
申请日期
1939.05.17
申请人
MAURICE MOSS
发明人
MOSS MAURICE
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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