Control knob for audio apparatus
USD253289S · kind S · design
29Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Oct 30, 1993 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.