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经营范围
发明名称
SiO2 electret and its manufacturing process
摘要
申请公布号
EP0608162(B1)
申请公布日期
1998.03.04
申请号
EP19940400075
申请日期
1994.01.12
申请人
LEWINER, JACQUES;PERINO, DIDER
发明人
LEWINER, JACQUES;PERINO, DIDER
分类号
C23C16/40;C23C16/56;H01G7/02;H04R19/01;(IPC1-7):H01G7/02
主分类号
C23C16/40
代理机构
代理人
主权项
地址
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