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CN218813247U
一种钢结构箱涵防渗结构
申请日: 2023-03-08
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中国电建市政建设集团有限公司,中电建市政建设集团山东工程有限公司
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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