Demineralizing filter for ultrasonic humidifiers
USD292017S · kind S · design
1Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Sep 22, 2001 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.