Air purifier
USD338521S · kind S · design
12Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Aug 17, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.