Michael Mattsson

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Sandviken, SE

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Patents Grantslast 30 patents

Information Patent Grant
Cutter of a boring head, hub for the cutter and method of manufactu...
- Patent number 5,507,355
- Issue date Apr 16, 1996
- Sandvik AB
- Michael Mattsson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill bit and roller cutter for said drill bit
- Patent number RE34167
- Issue date Jan 26, 1993
- Santrade Limited
- Michael Mattsson
- 175 - Boring or penetrating the earth
Information Patent Grant
Drill bit and roller cutter for said drill bit
- Patent number 4,832,136
- Issue date May 23, 1989
- Santrade Limited
- Michael Mattsson
- E21 - EARTH DRILLING MINING