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发明名称
Распорная винтовая колонка
摘要
申请公布号
SU140400(A1)
申请公布日期
1961.11.30
申请号
SU19600689229
申请日期
1960.12.15
申请人
发明人
RZHONDKOVSKIJ R.P.
分类号
E21B15/00
主分类号
E21B15/00
代理机构
代理人
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地址
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