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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS5622898
Kind Code:
Application Number:
Publication Date:
February 28, 1981
Filing Date:
July 27, 1979
Export Citation:
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International Classes:
H04R9/02; F25D15/00; H04R9/04; H04R9/06; (IPC1-7): H04R9/04; F25D15/00; H04R9/02; H04R9/06

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