Preparation of wafers not covered by a single main group of this subclass, e.g. wafer reinforcement

Child Classifications

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• H10P 90/12 +9 CPC CPC only CPC only
• H10P 90/19 +2 CPC CPC only CPC only
• H10P 90/21 +1 CPC CPC only CPC only
• H10P 90/22 CPC only CPC only
• H10P 90/24 CPC only CPC only