Paving stones
US9840813B2 · kind B2 · utility
1Cited by
188References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Apr 7, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2201/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Generally L-shaped, square, rectangular, triangular, hexagonal, parallelogram and other-shaped paving stones with inter-fitting vertical spacers forming serpentine side contact surfaces that provide enhanced stone-to-stone interlocking in both water-permeable and water-impermeable paving installations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.