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发明名称
摘要
申请公布号
JPS5253572(U)
申请公布日期
1977.04.16
申请号
JP19750140811U
申请日期
1975.10.15
申请人
发明人
分类号
E01B11/42;B66C7/12;B66C7/14;(IPC1-7):B66C7/14
主分类号
E01B11/42
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代理人
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