Earphone with microphone for hearing aid
USD604419S1 · kind S1 · design
15Cited by
19References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2009 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Nov 17, 2023 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.