패밀리특허 검색결과
Status	Patent	Country	KIPRIS
Registered	음향 전달특성 변화 측정을 통한 저전력 보안 감시 시스템 및 방법	KOREA
Registered	LOW-POWER SECURITY AND INTRUSION MONITORING SYSTEM AND METHOD BASED ON VARIATION DETECTION OF SOUND TRANSFER CHARACTERISTIC	UNITED STATES