| 发明名称 |
Aperture card |
| 摘要 |
|
| 申请公布号 |
US3293786(A) |
申请公布日期 |
1966.12.27 |
| 申请号 |
US19640394195 |
申请日期 |
1964.09.03 |
| 申请人 |
MICROSEAL CORPORATION |
发明人 |
ANDERSON THOMAS P. |
| 分类号 |
G03B21/64 |
主分类号 |
G03B21/64 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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