Elevator installation modernization using an existing maintenance interface | Patent Publication Number 20110308891
US 20110308891 A1Patent NumberUS 08967335 B2
Application Number13119115
Filled DateSep 15, 2009
Priority DateSep 15, 2009
Publication DateDec 22, 2011
Original AssigneeInventio Ag
Current AssigneeInventio Ag
Inventor/ApplicantsPaul Friedli
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