Condensed multiple convergence linear optical plate for intensification of solar radiation or the like
USD244139S · kind S · design
1Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Dec 1, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Apr 26, 1991 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.