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经营范围
发明名称
CRYSTAL VIBRATOR
摘要
PURPOSE:To expand a frequency varying width without changing resonance frequency and increasing resonance resistance value by providing respectively plural holes to the vibrating arms of a tuning fork crystal vibrator.
申请公布号
JPS5393792(A)
申请公布日期
1978.08.17
申请号
JP19770007390
申请日期
1977.01.26
申请人
SEIKO INSTR & ELECTRONICS
发明人
HOSHI HIDEO
分类号
H03H9/215;H03H9/21
主分类号
H03H9/215
代理机构
代理人
主权项
地址
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