Dustproof mask
USD817477S1 · kind S1 · design
1Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.