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    US (7) 8879756 VOICE FILM OF MULTI LAYERED STRUCTURE FOR FLAT TYPE SPEAKER
    9117434 VIBRATION-LEAD PLATE MOUNTED BETWEEN VOICE COIL PLATE AND DIAPHRAGM FOR FLAT TYPE SPEAKER
    9271085 GUIDE OF VOICE COIL PLATE FOR FLAT TYPE SPEAKER
    9271086 FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE OF PCB VOICE COIL PLATE
    9271060 FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE MOUNTED ON DIAPHRAGM
    8953834 FLAT TYPE SPEAKER HAVING MULTI-LAYER PCB PATTERN VOICE COIL FILM
    9210512 FLAT TYPE SPEAKER HORIZONTALLY CONNECTED MULTI MAGNETIC CIRCUIT
    Japan (2) 5572769 FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE OF PCB VOICE COIL PLATE
    6005730 FLAT TYPE SPEAKER HAVING MULTI-LAYER PCB PATTERN VOICE COIL FILM
    China (6) ZL201180027787.5 VOICE FILM OF MULTI LAYERED STRUCTURE FOR FLAT TYPE SPEAKER
    ZL201180057293.1 GUIDE OF VOICE COIL PLATE FOR FLAT TYPE SPEAKER
    ZL201280009393.1 FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE OF PCB VOICE COIL PLATE
    ZL201280009274.6 FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE MOUNTED ON DIAPHRAGM
    ZL201280033892.4 FLAT TYPE SPEAKER HORIZONTALLY CONNECTED MULTI MAGNETIC CIRCUIT
    ZL201280019067.9 FLAT TYPE SPEAKER CONTINUOUSLY CONNECTED MULTI MAGNETIC CIRCUIT