METHOD OF EVALUATING THE EFFICIENCY OF PERFORMANCE OF ROCK-BREAKING TOOL,申请号SU19772537944-传众专利搜索

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发明名称	METHOD OF EVALUATING THE EFFICIENCY OF PERFORMANCE OF ROCK-BREAKING TOOL
摘要
申请公布号	SU819295(A1)	申请公布日期	1981.04.07
申请号	SU19772537944	申请日期	1977.10.24
申请人	INST SVERKHTVERDYKH MATERIALOV AN UK SSR	发明人	SVESHNIKOV IGOR A,SU;VOVCHANOVSKIJ IVAN F,SU;VINNIK ERA-GALINA M,SU;VIROVETS LYUSEN N,SU
分类号	E21B10/00;E21C39/00;(IPC1-7):E21B9/00	主分类号	E21B10/00
代理机构		代理人
主权项
地址

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