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Patent Application - Headphone > Summary

US Patent Application

Patent Application No. US 20030091209

Published on May 15, 2003

Application No. 10/203080

Filed on Oct 9, 2002

Priority Date -

Inventor/Applicants

3

Tsunoda, Naotaka

Hamada, Tomomi

Ito, Tomohiro

Classification

International:

H04R 25/00

National:3

381/379.

381/378.;

381/383.;

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