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发明名称
摘要
申请公布号
GB1252639(A)
申请公布日期
1971.11.10
申请号
GBD1252639
申请日期
1969.03.28
申请人
发明人
分类号
F16D55/224;F16D55/00;F16D55/226
主分类号
F16D55/224
代理机构
代理人
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地址
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