Hearing aid
USD266271S · kind S · design
194Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1979 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Sep 21, 1996 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.