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| Application No. | Application Title | Issue Date |
| 20110051971 | Anti-Vibration In-Ceiling Speaker System Disclosed is a speaker system for installation within a ceiling, wall, or other structure. The speaker system includes at least one pair of woofers housed by a woofer housing. The two woofers of each pair are oppositely arranged relative to one another so that the vibra... | 03/03/2011 |
| 20100060395 | Free Air Magnetic Circuit and Speaker Disclosed is a free air magnetic circuit and speaker in which no pole piece is used. A magnet layer is located between a top plate and a back plate with a gap defined essentially in the center thereof. Into the gap, a wire coil attached to a diaphragm may be inserted. A... | 03/11/2010 |