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发明名称
摘要
申请公布号
JPS6449674(U)
申请公布日期
1989.03.28
申请号
JP19870143925U
申请日期
1987.09.22
申请人
发明人
分类号
(IPC1-7):F04B21/00;F04B21/06
主分类号
(IPC1-7):F04B21/00
代理机构
代理人
主权项
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