Loud-speaker device for cars
USD250711S · kind S · design
25Cited by
7References
1Claims
0Family size
Inventors
Key dates
| Filing date | Aug 23, 1976 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Jan 2, 1993 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.