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发明名称
APPARATUS FOR MAKING PERFORATING SLIT CHANNELS
摘要
申请公布号
SU1337513(A1)
申请公布日期
1987.09.15
申请号
SU19864034616
申请日期
1986.03.10
申请人
VNII PO KREPLENIYU SKVAZHIN BUROVYM RASTVORAM
发明人
SARKISOV NIKOLAJ M,SU
分类号
E21B43/114
主分类号
E21B43/114
代理机构
代理人
主权项
地址
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