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发明名称
摘要
申请公布号
FR2221160(A1)
申请公布日期
1974.10.11
申请号
FR19740008322
申请日期
1974.03.12
申请人
BERKESTAD KARL ERIK,SW
发明人
分类号
A63B21/00;A63B21/008;(IPC1-7):63B21/02
主分类号
A63B21/00
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