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发明名称
GLOWICA USZCZELNIAJACA DO WTLACZANIA CIECZY W CALIZNE
摘要
申请公布号
PL97138(B1)
申请公布日期
1978.02.28
申请号
PL19750183409
申请日期
1975.09.18
申请人
发明人
分类号
E21C37/12;(IPC1-7):E21C37/12
主分类号
E21C37/12
代理机构
代理人
主权项
地址
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