Surgical mask
USD898188S1 · kind S1 · design
3Cited by
256References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Oct 6, 2035 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.