Urpo Sten

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Hyvinkaa, FI

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Patents Grantslast 30 patents

Information 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
Information Patent Grant
Signalling procedure for a lift and a signalling system
- Patent number 4,742,893
- Issue date May 10, 1988
- Elevator GmbH
- Matti Otala
- B66 - HOISTING LIFTING HAULING
Information 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