Air filtration device
USD506816S1 · kind S1 · design
8Cited by
24References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2004 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Jun 28, 2019 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.