Building block
US5131202A · kind A · utility
8Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04C1/39
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A building block, at least one face of which has a recessed surface along at least a portion of its periphery. The recessed surface is of non-uniform width and, at least in part, defines a surface of irregular shape. Each remaining face of the block has a surface of regular geometric shape facilitating laying of the block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.