Title:
ACOUSTICAL MATERIAL
Document Type and Number:
Japanese Patent JPS5570899
Kind Code:
A
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Inventors:
MARUYAMA TAKAO
KUSAKAWA KOUICHI
KIMURA TOSHIAKI
MURATA NOBORU
KUSAKAWA KOUICHI
KIMURA TOSHIAKI
MURATA NOBORU
Application Number:
JP14431378A
Publication Date:
May 28, 1980
Filing Date:
November 24, 1978
Export Citation:
Assignee:
NHK SPRING CO LTD
International Classes:
F01N1/24; F01N13/16; G10K11/16; G10K11/162; (IPC1-7): F01N1/24; F01N7/16; G10K11/16