Face mask without an inflatable cuff
USD397215S · kind S · design
30Cited by
26References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Aug 18, 2012 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.