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发明名称
ACOUSTIC COIN VALIDATION
摘要
申请公布号
GB9020734(D0)
申请公布日期
1990.11.07
申请号
GB19900020734
申请日期
1990.09.24
申请人
ROKE MANOR RESEARCH LIMITED
发明人
分类号
G07D5/00;G07D5/04
主分类号
G07D5/00
代理机构
代理人
主权项
地址
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