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Inventor
LAASONEN TIMO
FI
2 patents
Patents
2 patents
US7533763B2
May 19, 2009
Safety device, safety system, and method for supervising safety of an elevator system
KONE CORP
66 citations
94
US7546903B2
Jun 16, 2009
Elevator system having location devices and sensors
KONE CORP
26 citations
89