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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5539797
Kind Code:
U
Application Number:
JP12411578U
Publication Date:
March 14, 1980
Filing Date:
September 07, 1978
Export Citation:
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International Classes:
H04R3/00; G10K11/00; G10K15/10; H03H9/30; (IPC1-7): H04R3/00; G10K11/00; H03H9/30