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经营范围
发明名称
METHOD OF CASTING RAILWAY FROG
摘要
申请公布号
SU628995(A1)
申请公布日期
1978.10.25
申请号
SU19772487730
申请日期
1977.05.23
申请人
DN METALL INSTITUT
发明人
VOROBEV GENNADIJ M,SU;APTEKAR NYUTON M,SU
分类号
B22D27/04;(IPC1-7):B22D27/04
主分类号
B22D27/04
代理机构
代理人
主权项
地址
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