Tensioning device for a face mask
USD997345S1 · kind S1 · design
0Cited by
25References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2021 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Aug 29, 2038 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.