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发明名称
HYDRAULIC APPARATUS FOR DRILLING BLAST-HOLES
摘要
申请公布号
PL280371(A1)
申请公布日期
1991.01.14
申请号
PL19890280371
申请日期
1989.06.30
申请人
PRZED EKSPLOATACJI WEGLA WSCHO
发明人
STRZEMPEK JERZY;KONIECZKO HENRYK;GRZYWA STANISLAW;BOTOR JAN;WOLF ANTONI
分类号
(IPC1-7):E21C1/00
主分类号
(IPC1-7):E21C1/00
代理机构
代理人
主权项
地址
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