Risto Wisakanto

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FIN-33500 Tampere, FI

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Patents Grantslast 30 patents

Information Patent Grant
Drill rod
- Patent number 5,823,274
- Issue date Oct 20, 1998
- Oy Winrock Technology, Ltd.
- Risto Wisakanto
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of using a pressurized medium in drilling
- Patent number 5,524,717
- Issue date Jun 11, 1996
- Harri Sjoholm
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of drilling a hole-in a rock
- Patent number 4,979,575
- Issue date Dec 25, 1990
- Oy Tampella AB
- Rolf Strom
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bearing arrangement for a feeding device for a drilling machine
- Patent number 4,702,621
- Issue date Oct 27, 1987
- Oy Tampella AB
- Jarmo Heinonen
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR