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经营范围
发明名称
MECHANICAL COAL MINER
摘要
申请公布号
PL106357(U1)
申请公布日期
1998.10.12
申请号
PL19970106357U
申请日期
1997.04.10
申请人
OSRODEK BADAWCZO-ROZWOJOWY URZADZEN MECHANICZNYCH OBRUM
发明人
NAWROCKI JERZY;MASLY STANISLAW
分类号
E21C25/68;E21C27/00;E21D11/40;(IPC1-7):E21C27/00
主分类号
E21C25/68
代理机构
代理人
主权项
地址
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