Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2006-04-11
2006-04-11
Le, Huyen (Department: 2646)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S426000, C381S432000
Reexamination Certificate
active
07027609
ABSTRACT:
A diaphragm for a speaker comprises a metal cone2and a paper auxiliary cone4bonded integrally to the center portion of the metal cone2.
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Kudo Yoshimi
Otake Akira
Sato Jun-ichi
Le Huyen
Pioneer Corporation
Sughrue & Mion, PLLC
Tohoku Pioneer Corporation
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