| 发明名称 |
PIEZOOELECTRIC PORCELAIN RESONATOR |
| 摘要 |
PURPOSE:To improve the frequency response of a piezo-electric porcelain resonator by providing a void space at the front and reverse sides of a main vibrator of the piezo-electric porcelain so as not to suppress the main vibrator. |
| 申请公布号 |
JPS5248488(A) |
申请公布日期 |
1977.04.18 |
| 申请号 |
JP19750124980 |
申请日期 |
1975.10.16 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
YOKOYAMA KAZUMI;MURAKAMI TOMOICHI;ISHIBASHI KOUJI |
| 分类号 |
H03H9/17;H03H9/10 |
主分类号 |
H03H9/17 |
| 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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