Earth-boring drill bits
US4073354A · kind A · utility
82Cited by
11References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Nov 26, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/567
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to the design of earth boring bits employing shaped preform cutters containing hard abrasive materials such as diamonds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.