Elevator installation modernization using an existing maintenance interface | Patent Number 08967335

US 08967335 B2
Application Number13119115
Publication NumberUS 20110308891 A1
Pendency5 years, 5 months, 20 days
Filled DateSep 15, 2009
Priority DateSep 15, 2009
Publication DateDec 22, 2011
Expiration DateSep 14, 2029
Inventor/ApplicantsPaul Friedli
ExaminesSALATA, ANTHONY J
Art Unit2837
Technology Center2800
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