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公开(公告)号:US20030121897A1
公开(公告)日:2003-07-03
申请号:US10027016
申请日:2001-12-21
IPC分类号: B23K026/00
摘要: A method for providing and reading micro-discrete indicia on a gemstone using near-field optics.
公开(公告)号:US20030121897A1
公开(公告)日:2003-07-03
申请号:US10027016
申请日:2001-12-21
IPC分类号: B23K026/00
摘要: A method for providing and reading micro-discrete indicia on a gemstone using near-field optics.