| 发明名称 |
PRODUCTION OF CONTACT LENSES |
| 摘要 |
A contact lens, particularly a flexible, silicone contact lens, is directly moulded with its final profile including a progressively tapered peripheral edge. The lens is moulded by complementary dies and an intermediate annular spacer provided on its inner periphery with a groove of concave cross-section.
|
| 申请公布号 |
US3761208(A) |
申请公布日期 |
1973.09.25 |
| 申请号 |
USD3761208 |
申请日期 |
1971.10.15 |
| 申请人 |
ESSILOR INTERNATIONAL,FR |
发明人 |
BOUDET J,FR;WAJS G,FR;GOMOND G,FR;BILLAULT P,FR |
| 分类号 |
B29C43/36;B29C43/38;B29D11/00;(IPC1-7):B29C1/06 |
主分类号 |
B29C43/36 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
