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发明名称
METHOD OF ULTRASOUND PASSAGE RINGS FORMATION
摘要
申请公布号
CS260124(B1)
申请公布日期
1988.12.15
申请号
CS19860007840
申请日期
1986.10.30
申请人
PERLIK,JIRI,CS
发明人
PERLIK,JIRI,CS
分类号
B21J5/12;(IPC1-7):B21J5/12
主分类号
B21J5/12
代理机构
代理人
主权项
地址
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