Asymmetrical button insert for rock drilling
USD371374S · kind S · design
30Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Jul 2, 2010 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.