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发明名称
摘要
申请公布号
JPS4933822(Y1)
申请公布日期
1974.09.12
申请号
JP19680041024U
申请日期
1968.05.20
申请人
发明人
分类号
B63B21/46;B63B22/04;(IPC1-7):B63B21/46;B63B21/52
主分类号
B63B21/46
代理机构
代理人
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