Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2007-02-20
2011-11-29
Nguyen, Tuyen (Department: 2832)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
Reexamination Certificate
active
08068634
ABSTRACT:
A first enforcing rib, a second enforcing rib, and a third enforcing rib are integrally formed at least at one of a front side and a back side of a diaphragm, the first enforcing rib being formed as an aggregate of a plurality of hexagons, enhancing strength and achieving light weight of a speaker using the diaphragm, preventing a difficulty of the speaker in emitting an audio sound.
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International Search Report for PCT/JP2007/053015, dated Jun. 5, 2007.
Nguyen Tuyen
Panasonic Corporation
RatnerPrestia
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