Molded plastic arch unit for a culvert or bridge
USD566852S1 · kind S1 · design
29Cited by
15References
1Claims
0Family size
Inventors
Key dates
| Filing date | Jul 21, 2006 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Apr 15, 2022 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.