Inventor · disambiguated record
Urpo Sten
Also filed as: STEN URPO
3 granted patents·31 citations·filing 1986–1987
68Inventor score
Top patents by PatentIndex Score
3 records- 0164US4742893ASignalling procedure for a lift and a signalling systemELEVATOR GMBH·Filed 1986·Granted May 10, 1988·22 cites·7 claims
- 0233US4737900AMethod of and apparatus for controlling the braking resistor of a frequency converterKONE ELEVATOR GMBH·Filed 1987·Granted Apr 12, 1988·5 cites·11 claims
- 0328US4799139AVoltage regulation for three-phase invertersKONE ELEVATOR GMBH·Filed 1987·Granted Jan 17, 1989·4 cites·8 claims
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