Acoustical ceiling panel
USD261435S · kind S · design
9Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1979 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.