| 发明名称 |
MANUFACTURE OF MULTIFOCAL OPHTHALMIC LENS MOLDS |
| 摘要 |
A method of manufacture of molds for casting finished multifocal plastic ophthalmic lenses of the type wherein the corrections for the near field of vision are provided on the convex surface of the finished lens.
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| 申请公布号 |
US3649236(A) |
申请公布日期 |
1972.03.14 |
| 申请号 |
USD3649236 |
申请日期 |
1970.03.05 |
| 申请人 |
BAUSCH & LOMB INC. |
发明人 |
CHARLES H. ROSENBAUER |
| 分类号 |
B29D11/00;C03B23/22;(IPC1-7):C03C15/00;C03B11/08;C03B/ |
主分类号 |
B29D11/00 |
| 代理机构 |
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