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Nurmijarvi, FI
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last 30 patents
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Patent Grant
Voltage regulation for three-phase inverters
Patent number
4,799,139
Issue date
Jan 17, 1989
Kone Elevator GmbH
Matti Kahkipuro
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Method of and apparatus for controlling the braking resistor of a f...
Patent number
4,737,900
Issue date
Apr 12, 1988
Kone Elevator GmbH
Matti Kahkipuro
B66 - HOISTING LIFTING HAULING