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发明名称
摘要
申请公布号
SU553144(A1)
申请公布日期
1977.04.05
申请号
SU19752116147
申请日期
1975.03.24
申请人
发明人
分类号
B61C5/02;(IPC1-7):B61C5/02
主分类号
B61C5/02
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代理人
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地址
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