Respiratory face mask
USD384147S · kind S · design
3Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1994 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Sep 23, 2011 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.