Roof ladder
USD424211S · kind S · design
0Cited by
3References
1Claims
0Family size
Inventor
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | May 2, 2000 |
| Priority date | — |
| Expiry date | May 2, 2014 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.