Portable and directional electrocrushing drill
US7559378B2 · kind B2 · utility
64Cited by
27References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Jun 27, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C37/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a portable, directional electrocrushing drilling apparatus and method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.