Johan Kemppi

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Ludvika, SE

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Patents Grantslast 30 patents

Information Patent Grant
Measuring contact sequence in a tap changer
- Patent number 7,977,589
- Issue date Jul 12, 2011
- ABB Technology Ltd.
- Lena Lunn
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Measuring Contact Sequence In A Tap Changer
- Publication number 20100263996
- Publication date Oct 21, 2010
- Lena Lunn
- H01 - BASIC ELECTRIC ELEMENTS