发明名称 IMPROVEMENTS IN OR RELATING TO CONTROL AND/OR MONITORING SYSTEMS
摘要 <p>According to one aspect of the present invention there is provided an access control device including electronic identification means, the access control device characterised in that the access control device also includes an audio communication device.</p>
申请公布号 WO2000048150(A1) 申请公布日期 2000.08.17
申请号 NZ2000000010 申请日期 2000.02.10
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