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发明名称
ULTRASONIC BLASTHOLE TRANSDUCER
摘要
申请公布号
SU1492048(A1)
申请公布日期
1989.07.07
申请号
SU19874307484
申请日期
1987.09.18
申请人
MO GORNYJ INSTITUT
发明人
SHKURATNIK VLADIMIR L,SU;YAMSHCHIKOV VALERIJ S,SU;BELICHENKO ANDREJ P,SU;VIGDORCHIK MIKHAIL D,SU
分类号
E21C39/00
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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