Stig Holgersen

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Hinna, NO

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Patents Grantslast 30 patents

Information Patent Grant
Pipe joint
- Patent number 5,997,045
- Issue date Dec 7, 1999
- Norsk Hydro ASA
- Einar B.o slashed.e
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Injector for injecting a tracer into an oil or gas reservior
- Patent number 5,881,807
- Issue date Mar 16, 1999
- Altinex AS
- Einar B.o slashed.e
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electro hydraulic deep well sampling assembly
- Patent number 5,322,120
- Issue date Jun 21, 1994
- Norsk Hydro a.s
- Einar B e
- E21 - EARTH DRILLING MINING