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发明名称
ACOUSTIC SIGNALLING DEVICE
摘要
申请公布号
EP0227712(B1)
申请公布日期
1991.04.03
申请号
EP19860903254
申请日期
1986.06.19
申请人
KARRENBERG, GEORG
发明人
KARRENBERG, GEORG
分类号
G04F5/02;A63B69/00
主分类号
G04F5/02
代理机构
代理人
主权项
地址
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