Akira Tamadera

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Saitama-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Loudspeaker having a yoke, magnet, cylindrical throat, and spacer p...
- Patent number 5,878,149
- Issue date Mar 2, 1999
- Pioneer Electronic Corporation
- Hiroyuki Hamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE