Single-piece grate bar key for stokers feeding steam generator furnaces
USD414859S · kind S · design
2Cited by
7References
1Claims
0Family size
Inventors
Key dates
| Filing date | Nov 27, 1998 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Oct 5, 2013 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.