| 发明名称 |
OPHTHALMIC REFRACTING CHART PROJECTOR |
| 摘要 |
An ophthalmic refracting chart projector with rotary slide discs having removable slides. Operating controls permit selective showing of slides in a desired sequence. Astigmatic charts may also be turned on their axes by such control.
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| 申请公布号 |
US3655276(A) |
申请公布日期 |
1972.04.11 |
| 申请号 |
USD3655276 |
申请日期 |
1969.10.31 |
| 申请人 |
AMERICAN OPTICAL CORP. |
发明人 |
LEONARD A. WILKINSON |
| 分类号 |
A61B3/036;A61B3/032;(IPC1-7):A61B3/10;G02B17/00 |
主分类号 |
A61B3/036 |
| 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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