Hallvard Breistein

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Oslo, NO

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Patents Grantslast 30 patents

Information Patent Grant
Frequency converter
- Patent number 8,587,141
- Issue date Nov 19, 2013
- Aker Engineering & Technology AS
- Ole Johan Bjerknes
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...