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发明名称
Spring cover
摘要
申请公布号
US1846778(A)
申请公布日期
1932.02.23
申请号
US19310535603
申请日期
1931.05.07
申请人
WHITEHOUSE MILTON H
发明人
WHITEHOUSE MILTON H.
分类号
F16F1/24
主分类号
F16F1/24
代理机构
代理人
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