Pair of filter cartridges for a powered air-purifying respirator
USD477401S1 · kind S1 · design
6Cited by
12References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 15, 2017 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.