Emergency siren receiver for controlling traffic lights
USD431484S · kind S · design
1Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Dec 31, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Oct 3, 2014 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.