Amplified subwoofer tube speaker
USD392640S · kind S · design
22Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2012 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.