发明名称 |
MANUFACTURE OF CRYSTAL VIBRATOR IN TUNINGGFORK SHAPE |
摘要 |
PURPOSE:To mass-produce tuning-fork-shaped crystal vibrators with high precision by cutting off and separating every other groove remaining part of the constantdepth groove formed on a crystal substrate at a constant pitch. |
申请公布号 |
JPS53139485(A) |
申请公布日期 |
1978.12.05 |
申请号 |
JP19770054735 |
申请日期 |
1977.05.11 |
申请人 |
SHARP KK |
发明人 |
KOYAMA TAMOTSU;KURODA YOSHIHARU |
分类号 |
H01L41/107;H03H3/02 |
主分类号 |
H01L41/107 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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