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发明名称
摘要
申请公布号
JPH02140047(U)
申请公布日期
1990.11.22
申请号
JP19890049420U
申请日期
1989.04.26
申请人
发明人
分类号
G12B5/00;F16F7/00;F16F9/30;F16F15/08;G11B33/08;(IPC1-7):F16F9/30
主分类号
G12B5/00
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代理人
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地址
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