Kobayashi Institute of Physical Research

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Sound insulation/absorption structure, and structure having these a...
- Patent number 7,464,790
- Issue date Dec 16, 2008
- Rion Co., Ltd.
- Hidekazu Kodama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Structure for decreasing low frequency air vibration
- Patent number 4,450,931
- Issue date May 29, 1984
- NGK Insulators, Ltd.
- Mitsuyasu Yamashita
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

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