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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS63102399
Kind Code:
Application Number:
Publication Date:
July 04, 1988
Filing Date:
December 24, 1986
Export Citation:
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International Classes:
H04R17/00; G10K9/12; G10K9/122; H01H57/00; H04R17/10; (IPC1-7): H04R17/10; G10K9/12; H01H57/00