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发明名称
摘要
申请公布号
US3537725(B1)
申请公布日期
1984.04.03
申请号
USD3537725
申请日期
1968.11.05
申请人
发明人
分类号
F16C33/76;F16J15/447
主分类号
F16C33/76
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