Monocular optical system for refractive error measurements
USD852251S1 · kind S1 · design
4Cited by
15References
1Claims
0Family size
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Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Jun 25, 2034 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.