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发明名称
INSERT TO INCREASE HEIGHT OF MINE ROOF SUPPORT
摘要
申请公布号
AU591424(B2)
申请公布日期
1989.11.30
申请号
AU19870078112
申请日期
1987.09.07
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA GMBH
发明人
EGON WOJACZEK;KLAUS SEEBERGER;HARRY ROSENBERG;WOLFGANG STRADTMANN
分类号
E21D23/00;E21D23/04;(IPC1-7):E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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