Wireless public address system
USD471175S1 · kind S1 · design
15Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Mar 4, 2017 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.