Eyeglass devices with removable auxiliary lenses or frames
US5980036A · kind A · utility
20Cited by
12References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2200/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eyeglass device includes a frame supporting first and second lenses therein. The frame includes support hooks and latch assemblies that permit the securing of third and fourth lenses to the frame over a respective first and second lens. Alternatively, an auxiliary frame is fastened to the frame using securing members attached to the auxiliary frame, the frame, or both the auxiliary frame and the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.