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发明名称
摘要
申请公布号
JPH02133994(U)
申请公布日期
1990.11.07
申请号
JP19890044426U
申请日期
1989.04.14
申请人
发明人
分类号
B63B21/20;B63B22/04;(IPC1-7):B63B22/04
主分类号
B63B21/20
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