Electric sound converter

Details Electric sound converter Electric sound converter

1998-03-18

2000-06-27

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

381124, 381172, 381355, 381367, 381370, 381378, 381426, H04R 2500

Patent

active

06081604&

ABSTRACT:
A head-phone having a case member storing therein a headphone unit, wherein a coating film containing a light discolor pigment to be discolored by irradiation of sun light is provided on the whole surface or a predetermined surface of the case member.

REFERENCES:
patent: 2846521 (1958-08-01), Beidler
patent: 5381486 (1995-01-01), Ludeke et al.
patent: 5706359 (1998-01-01), Chang

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