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发明名称
摘要
申请公布号
JPH0211445(Y2)
申请公布日期
1990.03.23
申请号
JP19830173190U
申请日期
1983.11.08
申请人
发明人
分类号
E01D19/12;E01D1/00;E01D2/00;E04H9/02;F16F15/02;(IPC1-7):E01D1/00
主分类号
E01D19/12
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