Subsoil blade ploughs
US4815545A · kind A · utility
2Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Apr 9, 1986 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Apr 9, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B13/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for fracturing below ground hard pans which includes entering a sub-soil tyne beneath the hard pan with upper surface angle in range of orientation which provides improved fracturing width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.