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发明名称
METHOD FOR MAKING WIDENED SECTIONS IN HOLE
摘要
申请公布号
RU1802059(C)
申请公布日期
1993.03.15
申请号
SU19904897458
申请日期
1990.12.28
申请人
G P PK I PO PROEKTIROVANIYU STROITELSTVA MOSTOV
发明人
BOJKIS SEMEN A,SU;LAPCHENKO EVGENIJ G,SU;PERELYAEV YURIJ N,SU;RYSS ALEKSANDR K,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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