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发明名称
Способ обработки канавок на внутренней поверхности толстостенных труб
摘要
申请公布号
SU63743(A1)
申请公布日期
1943.11.30
申请号
SU19430323623
申请日期
1943.06.07
申请人
VODOVOZOV M.KH.;TSELNKOV A.I.
发明人
VODOVOZOV M.KH.;TSELNKOV A.I.
分类号
B21C37/20
主分类号
B21C37/20
代理机构
代理人
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