Telephone conferencing device
USD539274S1 · kind S1 · design
7Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Mar 27, 2021 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.