Kernrechtsfrage
When did the statutory waiting period begin for the invalidity pension?
Extrahierter Entscheid
The waiting period began in spring 2002, not only at the MEDAS examination in May 2005.
Extrahierte Begründung
The medical record showed a later deterioration with at least 50% work incapacity in spring 2002; the lower court's finding that the start date was unprovable was contradicted by the consistent medical evidence and was therefore manifestly incorrect.