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发明名称
ULTRASOUND KEYBOARD PROTECTION ARRANGEMENT
摘要
申请公布号
EP0888632(B1)
申请公布日期
1999.12.22
申请号
EP19970903263
申请日期
1997.02.12
申请人
SIEMENS NIXDORF INFORMATIONSSYSTEME AG
发明人
SCHULTE, JOHANNES;LIEDTKE, OLIVER
分类号
G07F7/10;G07F19/00;G07G3/00;H01H13/70;(IPC1-7):H01H13/70
主分类号
G07F7/10
代理机构
代理人
主权项
地址
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