Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate
2011-07-19
2011-07-19
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
C381S370000, C381S373000
Reexamination Certificate
active
07983438
ABSTRACT:
A headphone unit including a back housing provided at the rear of a driver unit and a baffle portion provided at the front thereof. In the headphone apparatus, the baffle portion, which is formed to surround a space except a front opening portion of a driver unit, and/or the back housing portion, which is formed to cover the back surface of the driver unit, are formed using the air-permeable porous material.
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Kuntz Curtis
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Robinson Ryan
Sony Corporation
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