| 发明名称 |
ELECTROACOUSTIC TRANSDUCTION ELEMENT |
| 摘要 |
PURPOSE:To maintain high piezo-electric characteristics without no influence to the essential qualities of thermoplastic resion and to utilize macromolecular piezoelectric material at its maximum by forming an Al evaporation pole in its thickness 0.05 to 1.0mu on the both side of a flexible film type macromolecular piezoelectric material. |
| 申请公布号 |
JPS5257818(A) |
申请公布日期 |
1977.05.12 |
| 申请号 |
JP19750134294 |
申请日期 |
1975.11.07 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
SUZUMURA MASAKI;NIIGUCHI HIROTOSHI |
| 分类号 |
H04R17/00;(IPC1-7):04R17/00 |
主分类号 |
H04R17/00 |
| 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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