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发明名称
摘要
申请公布号
JPS5020217(U)
申请公布日期
1975.03.07
申请号
JP19730072032U
申请日期
1973.06.18
申请人
发明人
分类号
F04B45/04;(IPC1-7):F04B45/04
主分类号
F04B45/04
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代理人
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