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发明名称
PNEUMATISK BORRMASKIN MED SLAG- OCH VRIDVERKEN
摘要
申请公布号
SE7512093(A)
申请公布日期
1977.04.30
申请号
SE19750012093
申请日期
1975.10.29
申请人
INSTITUT GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK;SSSR
发明人
SUDNISCHNIKOV B V;KAMENSKY V V;VARNELLO E P;TUPITSIN S K;NAZAROV B V
分类号
(IPC1-7):E21B5/00
主分类号
(IPC1-7):E21B5/00
代理机构
代理人
主权项
地址
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