Rock drill bit
USD457535S1 · kind S1 · design
6Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2001 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | May 21, 2016 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.