Trond V. Johansen

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Trondheim, NO

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Patents Grantslast 30 patents

Information Patent Grant
Device with a valve function
- Patent number 4,941,511
- Issue date Jul 17, 1990
- Den Norske Stats Oljeselskap A.S.
- Trond V. Johansen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Pipeline vehicle
- Patent number 4,852,391
- Issue date Aug 1, 1989
- Den Norske Stats Oljeselskap A.S.
- Ola Ruch
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Shut-off device which can be inserted into a pipeline
- Patent number 4,852,614
- Issue date Aug 1, 1989
- Den Norske Stats Oljeselskap A.S.
- Trond V. Johansen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...