Document Type and Number:
Japanese Patent JPS5714880
Kind Code:
U
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Application Number:
JP8573480U
Publication Date:
January 26, 1982
Filing Date:
June 20, 1980
Export Citation:
International Classes:
H04R1/44; G01S7/52; G01S7/521; H04R29/00; (IPC1-7): G01S7/52; H04R1/44