Breathing filter
USD535750S1 · kind S1 · design
21Cited by
11References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 23, 2021 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.