Buluşumuz; Elektrik motorları rotor millerinin içi dolu (masif) malzemelerden (çoğunlukla çelik) üretilen eksen millerinin, İÇİ DOLU OLMAYAN BİR BORU veya benzeri olarak BOŞLUKLU ŞEKİLDE ÜRETİLMESİ (OLMASI) HALİNE AİTTİR. TR 2026 000103 A2
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