| 发明名称 |
Electrodes for microphones - by deposition of crystalline carbon on thermal decomp of heptane |
| 摘要 |
<p>A method for making cheaper, longer lasting electrodes for carbon microphone capsules by introducing the conductive material into an oxygen free atmosphere and depositing carbon crystals onto the surface by thermal decomposition of a satd. hydrocarbon e.g. heptane.</p> |
| 申请公布号 |
FR2096503(A3) |
申请公布日期 |
1972.02.18 |
| 申请号 |
FR19710022438 |
申请日期 |
1971.06.21 |
| 申请人 |
ZAKLADY WYTWORCZE GLOSNI,PO |
发明人 |
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| 分类号 |
H04R21/02;H04R31/00;(IPC1-7):04R1/00 |
主分类号 |
H04R21/02 |
| 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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