Akira Ikei

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Yawata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Loudspeaker diaphragm and process for producing same
- Patent number 4,377,617
- Issue date Mar 22, 1983
- Onkyo Kabushiki Kaisha
- Akira Ikei
- H04 - ELECTRIC COMMUNICATION TECHNIQUE