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发明名称
CRYSTAL FILTER
摘要
PURPOSE:To make small a nulti-element monolythic crystal filter in size, by constituting a step between the electrode and the other parts, through commonly using photo etching and chemical etching.
申请公布号
JPS53139952(A)
申请公布日期
1978.12.06
申请号
JP19770055168
申请日期
1977.05.13
申请人
SUWA SEIKOSHA KK
发明人
MOMOZAKI EIJI
分类号
H03H3/02;H03H9/56
主分类号
H03H3/02
代理机构
代理人
主权项
地址
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