| 发明名称 |
Multi-layer printed circuits - aligned by markings on the substrates |
| 摘要 |
<p>The system of markings is formed on the substrates with an ink which doesn't affect the photo-etching process but which can be developed to render the markings clearly visible. The ink is e.g. 10% bad acetate; 5% CMC; 20% vinyl acetate and 65% water developed by sodium monosulphide soln.</p> |
| 申请公布号 |
FR2087059(A5) |
申请公布日期 |
1971.12.31 |
| 申请号 |
FR19700016135 |
申请日期 |
1970.05.04 |
| 申请人 |
BERNARD RENE |
发明人 |
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| 分类号 |
G03F9/00;H05K1/02;H05K3/00;H05K3/46;(IPC1-7):41M5/00;41M3/00;05K3/00;03C5/00 |
主分类号 |
G03F9/00 |
| 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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