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发明名称
摘要
申请公布号
DD95094(A2)
申请公布日期
1973.01.12
申请号
DD19710158676
申请日期
1971.11.01
申请人
发明人
分类号
B66C13/00;(IPC1-7):B66C13/00
主分类号
B66C13/00
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代理人
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地址
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