Crawlspace periscope air vent
USD556315S1 · kind S1 · design
4Cited by
37References
1Claims
0Family size
Inventors
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.