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发明名称
FILLING-IN COMPOSITION
摘要
申请公布号
SU877079(A1)
申请公布日期
1981.11.30
申请号
SU19782662990
申请日期
1978.09.11
申请人
URALSKIJ NI PI MEDNOJ PROMYSHLENNOSTI
发明人
POPOVA ELEONORA M,SU;GERTMAN LYUDMILA K,SU
分类号
E21F15/00;(IPC1-7):E21F15/00
主分类号
E21F15/00
代理机构
代理人
主权项
地址
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