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公开(公告)号：US20230287573A1
公开(公告)日：2023-09-14
申请号：US18040280
申请日：2021-06-03
Inventor： Agnès MARLOT DOERR , Stewes BOURBAN
IPC: C23C30/00
Abstract: A component intended for internal parts or the movement of a timepiece or piece of jewellery includes a substrate coated at least partially with a black coat including aluminium oxide.
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