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发明名称
摘要
申请公布号
JPS4990759(U)
申请公布日期
1974.08.06
申请号
JP19720136164U
申请日期
1972.11.28
申请人
发明人
分类号
F16J15/32;E02F9/02;E02F9/22;(IPC1-7):F16J15/32
主分类号
F16J15/32
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