Questione giuridica chiave
Whether the claimant's health and earning capacity had changed enough to justify a full invalidity pension instead of a half pension.
Decisione estratta
No relevant deterioration was shown; the invalidity degree remained unchanged, so the half pension stood.
Motivazione estratta
The claimant himself reported no change, the treating physician described a stable condition, and the auxiliary workplace report did not substantiate incapacity for ordinary employment beyond adapted work.