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发明名称
摘要
申请公布号
GB1303007(A)
申请公布日期
1973.01.17
申请号
GB19710012639
申请日期
1970.03.16
申请人
发明人
分类号
F16C33/46;F16C33/54;(IPC1-7):F16C33/46
主分类号
F16C33/46
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代理人
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