Tube microphone amplifier
USD570821S1 · kind S1 · design
7Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.