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发明名称
Устройство для односторонней двухпроводной автоблокировки
摘要
申请公布号
SU71198(A1)
申请公布日期
1947.11.30
申请号
SU19470006043
申请日期
1947.06.05
申请人
LEONOV A.A.
发明人
LEONOV A.A.
分类号
B61L23/14
主分类号
B61L23/14
代理机构
代理人
主权项
地址
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