Lound speaker with double magnetic pole and moving coil and its playing and controlling circuit
Lound speaker with double magnetic pole and moving coil and its playing and controlling circuit
- CN 1,819,716 A
- Filed: 12/29/2005
- Published: 08/16/2006
- Est. Priority Date: 12/29/2005
- Status: Active Grant
- EN CH
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- Pin
