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发明名称
摘要
申请公布号
BG22636(A1)
申请公布日期
1977.04.20
申请号
BG19740026479
申请日期
1974.04.22
申请人
发明人
分类号
F16N3/12;(IPC1-7):F16N3/12
主分类号
F16N3/12
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