Tool for imprinting non-repeating stone patterns in fresh concrete
USD257824S · kind S · design
45Cited by
5References
1Claims
0Family size
Inventors
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Jan 13, 1995 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.