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发明名称
PRZEGUB ELASTYCZNY STROPNICY ZMECHANIZOWANEJ OBUDOWY GORNICZEJ
摘要
申请公布号
PL97397(B1)
申请公布日期
1978.02.28
申请号
PL19760186534
申请日期
1976.01.13
申请人
发明人
分类号
E21D17/00;(IPC1-7):E21D17/00
主分类号
E21D17/00
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代理人
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地址
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