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CN115944904A
一种表面摩擦性能可预制的人造仿真冰、制备方法及人造仿真冰场
申请日: 2023-01-17
公开(公告)日:2023-04-11
福建万聚福冰雪体育科技有限公司
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Magnetic recording disc for computer data
申请日: 2004-10-27
公开(公告)日: 2004-10-27
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Magnetic recording disc for computer data - has sector subjected to different treatment to prevent unauthorised copying Magnetic recording disc for computer data
申请日: 2004-10-27
公开(公告)日: 2004-10-27
MICROSOFT CORPORATION
US4930427
Magnetic recording disc for computer data - has sector subjected to different treatment to prevent unauthorised copying Magnetic recording disc for computer data
申请日: 2004-10-27
公开(公告)日: 2004-10-27
MICROSOFT CORPORATION