Roof ventilator
USD269456S · kind S · design
6Cited by
10References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1981 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Jun 21, 1997 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.