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发明名称
ULTRASONIC SPECTACLES FOR THE BLIND AND VISUALLY DISABLED
摘要
申请公布号
EP0777455(A1)
申请公布日期
1997.06.11
申请号
EP19960920688
申请日期
1996.06.13
申请人
OBRIRA GMBH
发明人
VOGEL, KARL-HEINZ
分类号
A61H3/06;G01S7/04;G01S7/521;G01S15/87;G01S15/88;G01S15/93;(IPC1-7):A61H3/06;G01S7/52;G01S7/56
主分类号
A61H3/06
代理机构
代理人
主权项
地址
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