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经营范围
发明名称
Narrow-band filter having a variable center frequency
摘要
申请公布号
AU675470(B2)
申请公布日期
1997.02.06
申请号
AU19940054983
申请日期
1994.02.08
申请人
NEC CORPORATION
发明人
MASAKI ICHIHARA
分类号
H03H17/02;H03H19/00;(IPC1-7):H03H19/00
主分类号
H03H17/02
代理机构
代理人
主权项
地址
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