| 发明名称 |
Shadow mask for use in color picture tube and method for fabricating same |
| 摘要 |
A shadow mask for use in the color picture tube and a method of fabricating the same are disclosed in which developement of the stretcher strain phenomenon is prevented by reducing the diameter of crystal grains of iron sheet material used for the shadow mask.
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| 申请公布号 |
US3909311(A) |
申请公布日期 |
1975.09.30 |
| 申请号 |
US19740494905 |
申请日期 |
1974.08.05 |
| 申请人 |
HITACHI, LTD. |
发明人 |
YAMADA, JUNICHI;TERASHIMA, ETUZO;TAKAI, AKIRA |
| 分类号 |
C21D8/02;H01J9/14;(IPC1-7):C21D9/46 |
主分类号 |
C21D8/02 |
| 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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