Spectacles lens-frame fitting coordinator
US4299032A · kind A · utility
7Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1980 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Apr 21, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B5/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for use in determining the minimum size of ophthalmic lens blank which may be made to fit a desired spectacles frame or the largest frame for a given lens blank size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.